TORONTO -- The Chicago White Sox haven't been this good since they were known as the Black Sox.
The White Sox improved baseball's top record to 24-7, matching the 1919 club for the best start in franchise history. They have led in all 31 games this season, a major-league record.
"Tying a record doesn't mean anything. It's nice to be part of, but I don't look at that," Chicago manager Ozzie Guillen said. "I just try to get my team ready for tomorrow's game."
Chicago starters are 19-3 with a 2.96 ERA.
The White Sox, who have won 17 of 20, swept a three-game series at Toronto for just the third time, and the first since Sept. 17-19, 1999.
"In my experience with the White Sox, we've always had a tough time playing in Toronto, so to come up here and sweep is a good feeling," first baseman Paul Konerko said. "We're rolling good. We'll just try to keep it going and not lose any momentum on the flight to Tampa."
The last-place Devil Rays host the White Sox for a three-game series starting Monday.
Buehrle (5-1) allowed four runs -- two earned -- and nine hits. He walked two and struck out four in 7 1/3 innings. Toronto helped Buehrle by hitting into four double plays.
The Blue Jays have lost four in a row, and have been swept in three of their last four home series.
Toronto's Gregg Zaun was carted off after he was kneed in the side of the head by Chicago second baseman Pedro Lopez while breaking up a double play in the bottom of the ninth inning. Lopez made contact with Zaun as he made a jump throw to first base.
Zaun was down on the field for nearly 15 minutes and was fitted with an oxygen mask and a head and neck brace. He was unconscious for a few minutes, but was awake and made some movements before being removed from the field and taken to a hospital for further tests.
Konerko and other Chicago players, who were huddled around him, said Zaun was having trouble breathing.
"It was scary," Konerko said. "He was choking on something. That's what everyone standing out there was a little bit worried about. It's one thing to get knocked out, you get knocked out and you come to, but he was lifeless and it sounded like he was choking on something. He was gasping for air, but lifeless at the same time.
"It was getting to the point where, 10, 15, 20 seconds into it, you're wondering if this guy is going to choke to death right here."
A Blue Jays spokesman said Zaun had breathing problems consistent with a head injury.
Toronto manager John Gibbons declined to comment after the game.
The game was delayed for 13 minutes, and ended two batters after Zaun was injured.
"He is like the captain on the team," Toronto pitcher Jason Frasor said. "It's a tough loss. Who knows how long he is going to be out. I'm sure it's going to be a few days at least. He'll be missed."
Damaso Marte relieved Dustin Hermanson with one out and no one on in the ninth. He walked Zaun, and then induced John McDonald to ground to third baseman Joe Crede, who threw to second for the force on Zaun. McDonald was safe at first.
Uribe hit a solo homer off Gustavo Chacin (4-2) in the first inning and Dye hit a two-run shot in the second.
Crede's sacrifice fly and Lopez's run-scoring single gave Chicago a 5-0 lead in the fourth.
Chacin, the AL rookie of the month for April, allowed five runs and nine hits in six innings.
"It was a tough day. I missed my spots a lot. I left the ball over the middle of the plate," Chacin said.
Toronto rallied with four runs in the fourth. Corey Koskie's single, Shea Hillenbrand's single and Vernon Wells' walk loaded the bases before Alex Rios hit a grounder to shortstop Uribe, who bobbled the ball. Koskie scored on the grounder and Rios reached on the error.
After Zaun followed with a run-scoring single, McDonald hit what looked to be an inning-ending double play ball, but Uribe's throw to first sailed over the head of Konerko. Two runs scored on what was ruled an RBI grounder and an error.
- About 10 Toronto players handed out roses to mothers as they entered Rogers Centre.
- Many players, coaches and umpires around baseball wore pink wristbands in recognition of breast cancer awareness on Mother's Day.