The early results were inconclusive.
"We had a good day," Tannehill said after practice, "but obviously there's a lot of areas we can improve on being the first time that we've really played in five months."
The Dolphins are hoping their new receiving talent will awaken a slumbering passing offense that finished 26th in the NFL last season.
Tannehill seemed to favor his security blanket from last season, wide receiver Brian Hartline, but he also seemed to be developing a chemistry with Gibson, who often lined up as the slot receiver.
And while most of Miami's biggest offseason free-agent signings were in the passing game, those weren't the only major acquisitions. In fact, new talent is a theme for the rebuilt Dolphins.
Overall, the Dolphins, who underwent a major offseason makeover, could have as many as nine new starters - Wallace (Pittsburgh), Gibson (St. Louis), Keller (N.Y. Jets), right tackle Tyson Clabo (Atlanta), cornerback Brent Grimes (Atlanta) and linebackers Dannell Ellerbe (Baltimore) and Philip Wheeler (Oakland), among them.
Tuesday's starting offensive line featured left tackle Jonathan Martin, left guard Richie Incognito, center Mike Pouncey, right guard John Jerry and Clabo at right tackle. Keller was at tight end with Wallace and Gibson at wide receiver, Tannehill at quarterback, Javorskie Lane at fullback and Lamar Miller at tailback.
The starting defensive line had tackles Paul Soliai and Jared Odrick and ends Cam Wake and Olivier Vernon. The middle linebacker was Ellerbe with Wheeler at weak-side linebacker and Koa Misi at strong-side linebacker. The starting secondary was strong safety Reshad Jones and free safety Chris Clemons with cornerbacks Grimes (Achilles) and Richard Marshall (back), both of whom are coming off injury-shortened seasons.
"I think they've been moving around well the last couple of weeks," coach Joe Philbin said, "so we're anxious that they participate fully in these practices."
For what it's worth, Philbin said he was pleased with Tuesday's workout.
"I just liked the way our operation was," he said. "I thought the guys practiced fast. There weren't a lot of balls on the ground ... there weren't a lot of takeaways and penalties and sloppiness.
"Really, the first day you're looking for, were there a ton of penalties? Was there a ton of bad center-quarterback exchanges? Did the defense jump offside all day? Those types of things. For the first day, there were a reasonable number of those but I don't think it was anything excessive."
Safety Reshad Jones practiced Tuesday after missing Monday amid speculation he is unhappy with his contract. Jones would only say he wasn't there Monday because of "a personal issue."
When asked whether he would decide to play this season under his current contract, Jones said, "I'm not really focused on that. I know if I continue to do what I'm doing, work my butt off, everything will work itself out."
Among the players not at Tuesday's workout were defensive end Dion Jordan, the first-round pick from Oregon who can't attend until Oregon's academic year ends next month; cornerback Jamar Taylor, the second-round pick from Boise State who had hernia surgery; and defensive tackle Randy Starks, who signed the franchise tender but wants a multi-year deal.
Philbin had no comment on any of them.
"As we all know this is a voluntary period that we're in right now so any of the players that participated in practice, I'll be happy to answer questions about," he said.
Among players attending but not practicing were tackle Dallas Thomas (shoulder surgery), the third-round pick from Tennessee, and guard Lance Louis (knee surgery), the free-agent signee from Chicago.
A couple of players had new positions Tuesday as tackle Will Yeatman took snaps at left guard, and defensive end Jared Odrick took snaps at tackle.
Odrick was a starter Tuesday because Starks was absent. But Odrick would like to play defensive tackle even upon Starks' return.
And in a mild surprise, tight end Michael Egnew, last year's third-round pick who was only on the active roster for two games, took snaps with the first team.
Philbin said everything Tuesday is experimental, for now.
"We want to get as many plays on film as we possibly can," he said. "In the OTAs, you want to see how guys (respond). You let the coaching kind of step back a little bit and let's see how these guys play on their own to a certain degree, make the calls, adjust, those types of things."
"I learned about those two guys that they look a lot better on the field than in offseason drills. They looked a little slow out there but then they get on the field and they're a lot faster on the field than in workouts."—Dolphins WR Mike Wallace and what he learned about WR Brandon Gibson and TE Dustin Keller in Tuesday's practice.
A closer look at the Dolphins' picks:
Round 1/3 - Dion Jordan, DE, 6-6, 248, Oregon
The Dolphins had him rated as the highest player on their board, and were able to acquire him for the low price of the No. 12 and 42 overall picks. Jordan will be a third-down pass-rush specialist to begin with but the Dolphins love his athleticism and versatility.
Round 2/54 - Jamar Taylor, CB, 5-11, 192, Boise State
The Dolphins need to revamp their secondary after parting ways with Vontae Davis and Sean Smith in the last year, and began that process with Taylor, one of the most consistent corners in the draft who had four interceptions in his senior season. Taylor will compete for the No. 3 cornerback spot behind starters Brent Grimes and Richard Marshall, and will eventually replace the two older veterans in the lineup.
Round 3/77 - Dallas Thomas, G/T, 6-5, 300, Tennessee
The Dolphins need to find better pieces for their zone blocking scheme, and Thomas could be a better fit at left guard than incumbent Richie Incognito. Thomas is a versatile player who started 25 straight games at left tackle for the Vols and 12 at left guard his senior season, earning second team All-America honors. He's currently rehabbing a torn labrum, but could be the Dolphins' new left guard this season.
Round 3/93 - Will Davis, CB, 5-11, 186, Utah State
The Dolphins traded into the back part of the third round to ensure they didn't miss out on another cornerback, and used that pick to draft Davis, a raw player who doesn't have much football experience but has risen up draft boards over the past year. Davis played at three different colleges, but had a great senior season with five interceptions. He will compete with Jamar Taylor and Nolan Carroll for the No. 3 and 4 cornerback spots.
Round 4/104 - Jelani Jenkins, LB, 6-0, 243, Florida
Jenkins is an undersized but incredibly fast linebacker who can chase ball-carriers from sideline to sideline and excels in coverage, as well. His senior season was derailed by a broken bone in his right thumb, a pulled left hamstring and a broken bone in his right foot, but the Dolphins view him as an immediate special teams competitor and someone who can compete with Koa Misi for a starting linebacker job.
Round 4/106 - Dion Sims, TE, 6-5, 262, Michigan State
The Dolphins need a tight end to replace the blocking production of Anthony Fasano, who departed for Kansas City, and drafted one of the best blocking tight ends in the draft in Sims, who played at 285 pounds at Michigan State. Dustin Keller will be the main pass-catching tight end, and Sims, who had 475 receiving yards and two touchdowns in 2012, will likely be ahead of Michael Egnew and Charles Clay as the No. 2 tight end.
Round 5/164 - Mike Gillislee, RB, 5-11, 208, Florida
The Dolphins let Reggie Bush walk away in free agency this offseason, and replaced him on the roster with Gillislee, who rushed for 1,152 yards and 10 touchdowns in 2012, his only season as the Gators' primary running back. Gillislee will play special teams behind Lamar Miller and Daniel Thomas on the depth chart, but is a solid blocker and gives the Dolphins good depth in case either player is injured or ineffective.
Round 5/166 - Caleb Sturgis, K, 5-10, 188, Florida
The Dolphins took their third Gator of the day in Sturgis, the second kicker off the board in this draft. Sturgis has a big leg, connecting on 6-of-8 field goals from 50-plus yards over his past two seasons, and almost certainly will replace current Dolphins kicker Dan Carpenter, who was 4-of-9 from 50-plus yards over the last two years.
Round 7/250 - Don Jones, DB, 5-11, 191, Arkansas State
The Dolphins clearly want to revamp their secondary after drafting Don Jones, the third defensive back they have taken this draft. Jones is raw as a defensive back, playing safety for two years at Arkansas State after arriving as a running back. He had a tremendous Pro Day, recording a 4.4 in the 40, a vertical leap of 42 inches and 17 reps on the bench press, and the Dolphins will look to use him as a slot cornerback and special teams contributor.
DT Randy Starks (tendered at $8.45 million; signed tender March 19).
S Tyrone Culver was signed off the street at the end of the season to shore up the secondary and special teams units, and likely won't be re-signed.
(not tendered offers)
OT Patrick Brown (not tendered as ERFA) was inactive for the final four games after being signed off the street, and likely won't be back in 2013.
LB Jelani Jenkins (4/104); 4 yrs, terms unknown.
TE Dion Sims (4/106): 4 yrs, terms unknown.
RB Mike Gillislee (5/164): $2.322M/4 yrs, $162,800 SB.
K Caleb Sturgis (5/166); 4 yrs, terms unknown.
DB Don Jones (7/250): 4 yrs, terms unknown.
S Chris Clemons: UFA; $2.75M/1 yr, $1M guaranteed.
QB Pat Devlin: ERFA; $480,000/1 yr.
G/T Nate Garner: UFA; $4.875M/3 yrs, $500,000 SB/$700,000 guaranteed.
WR Brian Hartline: Potential UFA; $30.775M/5 yrs, $12.5M guaranteed.
QB Matt Moore: Potential UFA; $8M/2 yrs, $4M guaranteed.
LB Austin Spitler: RFA tendered at 1.323M with third-round pick as compensation); $1.323M/1 yr.
CB R.J. Stanford: ERFA; $630,000/1 yr.
DT Randy Starks: FFA; $8.45M/1 yr.
T Tyson Clabo: FA Falcons; 1 yr, terms unknown.
LB Dannell Ellerbe: UFA Ravens; $35M/5 yrs, $7M SB/$17M guaranteed.
WR Brandon Gibson: UFA Rams; $9.78M/3 yrs, $3M SB/$3.75M guaranteed.
CB Brent Grimes: UFA Falcons; $5M/1 yr, $2.25M SB/$3M guaranteed.
TE Dustin Keller: UFA Jets; $4.25M/1 yr, $2.25M guaranteed.
G Lance Louis: UFA Bears; $1.603M/1 yr, $100,000 guaranteed.
DT Vaughn Martin: UFA Chargers; $4M/2 yrs, $750,000 guaranteed.
WR Marvin McNutt (waivers Eagles).
WR Mike Wallace: UFA Steelers; $60M/5 yrs, $11M SB/$30M guaranteed/$27M fully guaranteed.
LB Philip Wheeler: UFA Raiders; $26M/5 yrs, $7M SB/$13M guaranteed.
S Jonathon Amaya: Not tendered as RFA/Cardinals; 1 yr, terms unknown.
WR Davone Bess (traded Browns).
LB Kevin Burnett (released/post-June 1 designation).
RB Reggie Bush: UFA Lions; $16M/4 yrs, $4M SB.
LB Karlos Dansby (released/post-June 1 designation).
TE Anthony Fasano: UFA Chiefs; $16M/4 yrs, $4.5M guaranteed.
K Nate Kaeding: UFA Buccaneers; 1 yr, terms unknown.
T Jake Long: UFA Rams; $34M/4 yrs, $5M SB/$20M potentially guaranteed/$12M fully guaranteed).
TE Jeron Mastrud: Not tendered as RFA/Raiders; terms unknown.
CB Bryan McCann: Not tendered as RFA/Cardinals; 1 yr, terms unknown.
DT Tony McDaniel: UFA Seahawks; 1 yr, terms unknown.
WR Marlon Moore: Not tendered as RFA/49ers; 1 yr, terms unknown.
CB Sean Smith: UFA Chiefs; $18M/3 yrs, $12M guaranteed.