Dunn will serve the second game of his two-game suspension for charging the mound against the Philadelphia Phillies last Friday.
The 23-year-old outfielder, tied with Florida’s Mike Lowell for the National League lead with 22 home runs, charged Phillies pitcher Carlos Silva after Silva threw behind him. Originally given a three-game suspension, Dunn negotiated it down to two games and served the first game on Friday.
Reds first baseman Sean Casey was also hit with a three-game suspension for his role in the brawl. He appealed the decision and will continue playing until his hearing is held.
The Reds certainly could have used Dunn’s bat in the lineup in Friday’s series opener.
Arizona second baseman Alex Cintron hit a solo homer to cap a two-run rally in the ninth inning, giving the Diamondbacks a 6-5 victory. Arizona, which has won five of its last six, has beaten Cincinnati 12 straight times.
The Diamondbacks improved to 36-36, reaching the .500 mark for the first time since April 1.
Jose Guillen had a big game against his former team, hitting a two-run homer and an RBI double for the Reds, who have lost three of five.
“I’m just happy to be back and just showing them something,” Guillen said. “Since that happened last year, they told me I was going to get a chance to play and I never got a chance.”
STANDINGS: Reds - 4th place, 3 GB, NL Central. Diamondbacks - 3rd place, 7 GB, NL West.
REDS PROBABLE STARTER: Jimmy Anderson (1-3, 7.76 ERA). Anderson, who has allowed at least three earned runs in all five of his starts this season, has lost two straight starts. On Monday, he gave up four runs and seven hits through six innings of a 4-3 loss to the Chicago Cubs. The 27-year-old lefty has struggled in seven career games against the Diamondbacks, going 0-4 with a 7.42 ERA .
DIAMONDBACKS PROBABLE STARTER: John Patterson (0-3, 8.53 ERA). Patterson, who has not lasted past the sixth inning in any of his four starts this season, will be making his first start in two weeks. On June 7, he went four innings, giving up three runs and three hits, but he did not get the decision in the Diamondbacks’ 5-3 win over the Cleveland Indians. The 25-year-old right-hander has never faced the Reds.
OFFENSIVE LEADERS: Reds - Sean Casey, .289 avg.; Dunn, 22 HRs and 46 runs; Austin Kearns, 57 RBIs; Aaron Boone, 11 SBs. Diamondbacks - Luis Gonzalez, .315 avg., 15 HRs, 50 RBIs and 45 runs; Tony Womack, 8 SBs.
SEASON SERIES: Diamondbacks, 1-0.
STREAKS AND NOTES: Reds - CF Ken Griffey Jr. has missed four straight starts because of soreness in his right hip and groin. He hit a sacrifice fly as a pinch-hitter Friday. … The Reds have committed at least one error in 48 of their 72 games. … The Reds lead the majors with 18 wins in their last at-bat. Diamondbacks - LF Gonzalez is 7-for-18 (.471) with three home runs in his career against LHP Anderson. … RHP Bret Prinz will throw a third and final session of batting practice Saturday and then is headed for a minor league rehabilitation assignment. He strained his groin in the first game of the season. … SS Tony Womack has hit safely in five of six games, batting .333 (9-for-27) in that span.
ROAD/HOME RECORDS: Reds - 15-17 on the road; Diamondbacks - 19-18 at home.
INJURIES: Reds - INF Ryan Freel (hamstring), 15-day DL; RHP John Riedling (elbow), 15-day DL; RHP Luke Prokopec (elbow), 60-day DL. Diamondbacks - 3B Shea Hillenbrand (oblique), 15-day DL; 2B Junior Spivey (ankle), 15-day DL; LHP Randy Johnson (knee), 15-day DL; RHP Matt Mantei (shoulder), 15-day DL; RHP Curt Schilling (hand), 15-day DL; RHP Bret Prinz (groin), 60-day DL; INF Craig Counsell (thumb), 60-day DL.