CLEVELAND -- All-Star guard Kyrie Irving fired in a game-high 39 points in the Cleveland Cavaliers' 114-111 overtime victory over the Milwaukee Bucks on Friday night at Quicken Loans Arena.
Irving, who has been sick the last two days, had 28 points in the second half and extra period.
The Cavs (10-15) are now 3-0 in overtime this season. They outscored the Bucks in overtime 18-15.
Guard Jarrett Jack came up big for the Cavaliers with 17 points and five assists.
Two huge 3-point goals by Irving in the overtime period gave the Cavs some breathing room.
Jack's 19-foot jumper opened up a 104-98 bulge with 2:40 to play, but the Bucks (5-20) would not go away.
Forward Earl Clark buried a 3-pointer with the shot clock about to expire to give the Cavs a 110-105 advantage with 44 seconds remaining.
Clark came off the bench to score 14 points. He made 4-of-6 from behind the arc.
Bucks guard O.J. Mayo missed two 3-point attempts in the waning seconds with a chance to tie the score. The Ohio native had 20 points off the bench for Milwaukee, which has lost five in a row.
The Cavs have won five of their last six games at The Q.
It was a nip-and-tuck the entire fourth quarter.
Forward John Henson's two free throws with 1:42 to play handed the Bucks a 96-94 lead. That stood up until Cavs center Anderson Varejao grabbed a rebound and called timeout with 8.8 seconds left.
Cavs forward Tristan Thompson's tip-in with 1.8 seconds remaining knotted the score at 96. It came on a missed shot on a drive to the basket by Irving. Thompson had a game-high 15 rebounds.
Forward Khris Middleton's 15-foot jumper was off the mark at the buzzer. The teams were tied at 96 after regulation.
The Cavs scored the first seven points of the fourth quarter to take a 77-70 advantage with 11:14 to play. Varejao had a three-point play on his souvenir bobblehead night.
However, the lead didn't hold up.
Mayo's 3-pointer cut the Bucks' deficit to one point, 87-86, with 6:40 remaining.
The third quarter turned into an Irving-Brandon Knight duel. Irving fired in 12 points in the third. He had 23 points and three assists after three quarters.
Knight added eight points and six assists in the third. He had 15 points and 10 assists through three quarters.
The teams were tied at 70 after three quarters.
The Cavs were unable to shake the pesky Bucks, who came into the game with a better road than home record. The teams were tied at halftime 47-47.
Irving had 11 points for the Cavs at halftime, while C.J. Miles added 10.
John Henson had 10 points for the Bucks, who shot just 33.3 percent from the field in the first half.
The Cavs weren't much better at 38.3 percent.
The Cavs had an 11-point lead, 25-14, before things unraveled. The Bucks scored the final 12 points of the first quarter for a 26-25 advantage.
The Cavs had a block party in the first quarter with seven blocks, including three by Bynum. One of his swats came with his elbow on a shot attempt from center Miroslav Raduljica.
NOTES: Cavaliers G Kyrie Irving was questionable before the game with sickness. "I've been lying in the same spot the last two days," Irving said. "I have to deal with it. I have to give it my all and have to live with the results." ... G Dion Waiters (tendinitis in his right wrist) and F Anthony Bennett (sick) were held out of the game. ... The Bucks were playing without F Ersan Ilyasova (ankle), F Zaza Pachulia (right foot fracture) and F Larry Sanders (surgery on right thumb) and wing players Gary Neal (plantar fasciitis in left foot), Carlos Delfino (surgery on right foot) and Caron Butler (sore left knee). "I have three bigs and I'm starting two of them," Bucks coach Larry Drew said. "You do the math." ... Rookie G Giannis Antetokounmpo made his second start at shooting guard, while G O.J. Mayo will come off the bench. ... Cavaliers G Jarrett Jack leads all Eastern Conference reserves in assists with 3.7 per game.