Ortiz will return tonight vs. White Sox

Ortiz cleared for tonight's game vs. Chicago

After doctors conducted tests to determine the cause of the heart palpitations he had twice over a 10-day span in late August, David Ortiz has been cleared to return to action when the White Sox visit the Red Sox tonight. The slugger had been sidelined for eight games, but the Red Sox said results from the tests did not identify "further problems."

The Red Sox have been looking for something to jolt them into a much-needed hot streak. Ortiz's return could help, and so should the dramatic win on Monday night, provided by a walk-off blast from Carlos Pena in the bottom of the 10th inning, will be that something.

Trailing the Twins by six games and the White Sox by 5 1/2 in the American League Wild Card standings with 24 games left, the Red Sox need all the victories they can get.

"We don't need to worry about 22 games down the road," said manager Terry Francona. "We just need to show up [on Tuesday] and beat them again."

Slowly but surely, the Red Sox are getting healthy again. They got Alex Gonzalez and Wily Mo Pena back on Sunday, followed by Manny Ramirez, Trot Nixon and Jason Varitek in Monday's game.

"It effects the whole flow of the game," said third baseman Mike Lowell. "It was a good flow [on Monday night]. We haven't had that in a long time."

Pitching matchup
CWS: RHP Javier Vazquez (11-8, 4.98 ERA)
Vazquez pitched well in his last outing, giving up two runs on seven hits and three walks. He was in trouble much of the day, but held Devil Rays hitters to 1-for-8 with runners in scoring position. He was in line for his first win since Aug. 10, but the White Sox let a one-run lead get away in the eighth inning.

BOS: LHP Kason Gabbard (0-3, 6.35 ERA)
Gabbard will make his third start of the season. The rookie left-hander suffered a loss in his last outing, against the A's, giving up six hits and five runs over 3 1/3 innings. This will be his first career appearance at Fenway Park.

Player to watch
Second baseman Mark Loretta has performed well against Vazquez in his career, going 11-for-32. Doug Mirabelli, who will likely sub for Jason Varitek, is 4-for-9 off Vazquez with two homers.

On the Internet
 Gameday Audio
•  Gameday
•  Official game notes

On television

On radio
• WEEI 850 AM, WROL 950 AM (Español)

Up next
• Wednesday: Red Sox (RHP Kyle Snyder, 4-3, 5.94) vs. White Sox (RHP Jose Contreras, 11-7, 4.23), 7:05 p.m. ET
• Friday: Red Sox (RHP Kevin Jarvis, 0-2, 9.37) vs. Royals (LHP Odalis Perez, 5-7, 6.43), 7:05 p.m. ET
• Saturday: Red Sox (RHP Josh Beckett, 14-10, 5.11) vs. Royals (LHP Mark Redman, 9-8, 5.26), 7:05 p.m. ET

Ian Browne is a reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.