After dropping three of four to Kansas City over the weekend, the Red Sox head to Toronto for the final time this season.
Boston has enjoyed success in the series so far, taking eight of 13 against its division foes.
Both teams entered the season with hopes of taking the American League East crown, but the Blue Jays haven't lived up to the hype generated from their high-profile offseason that saw the arrival of stars like R.A. Dickey and Jose Reyes.
It's been a different story for the Red Sox, who still lead the division despite losing the series to the Royals.
The last time Toronto faced Boston in late June, the Blue Jays appeared to be on the cusp of fulfilling their potential. They were the hottest team in baseball and had won 12 of 14 games. But over the course of a four-game series, the Red Sox got to the Toronto starters early and often, taking three of the four contests.
The Blue Jays haven't recovered since, dropping to 10 games below .500.
Todd Redmond is slated to get the start for Toronto on Tuesday. This start originally belonged to Esmil Rogers, but the right-hander was sent to the bullpen after three straight shaky starts in which he posted a combined 14.59 ERA.
"He'd been struggling," manager John Gibbons said. "Take care of him and give somebody else a shot. And we like what Redmond's been doing."
Redmond, who has a 4.22 ERA in eight appearances, was sent down to Triple-A Buffalo after being roughed up for three runs over 3 2/3 innings against the Angels in his last outing on Aug. 2. Redmond was recalled after Monday's 5-1 loss to the A's, with J.A. Happ being put on the bereavement list.
Redmond's opponent will be Ryan Dempster, who has been going through some struggles of his own lately. The veteran right-hander has a 9.00 ERA over two outings in August, but the Red Sox offense has rallied to victory after his exit in both starts. Though it's nice the team has found a way to win, Dempster said he'd prefer not to put his team in a tough spot.
"I want to try and leave the game leading and not losing, not relying on these comebacks," he said. "Somehow, someway, though, this team finds a way of digging deep, and it's fun to watch."
Red Sox: Ross nearing return
Catcher David Ross could return to the Red Sox lineup as early as Aug. 19.
Suffering from a concussion, the Boston backstop hasn't played since June 14. He was a designated hitter for Double-A Portland to begin his rehab assignment and will join Triple-A Pawtucket on Tuesday.
Ross will rotate between catching and DH every other day until he's able to play back to back games behind the plate.
By the time the Red Sox head to San Francisco on Aug. 19, manager John Farrell hopes Ross will be ready.
"Provided that there are no unforeseen setbacks, he would be eligible when we get to San Francisco," Farrell said.
Blue Jays: Lawrie continues hot streak
Brett Lawrie has been red hot in August and continued seeing the ball well Monday against the A's.
Lawrie went 2-for-3 and raised his batting average to a season-high .250 in the loss to Oakland.
Lawrie has now hit safely in 13 of his last 14 games and has a .439 batting average and .465 on-base percentage in August.
• Red Sox shortstop Stephen Drew extended his season-high hit streak to 12 games after going 2-for-4 on Sunday.
• Red Sox players Jonny Gomes, Jarrod Saltalamacchia and Dustin Pedroia used their day off to watch the Blue Jays and A's square off from the stands of Rogers Centre on Monday. They sat in the seats behind home plate.
• The Blue Jays are 29-31 at the Rogers Centre this season.
Michael Periatt is an associate reporter for MLB.com. Follow him on Twitter @Michael Periatt. This story was not subject to the approval of Major League Baseball or its clubs.