Pitcher Roy Halladay is doing his part to help Blue Jays teammate Josh Towers get out of his funk by throwing another challenge the right-hander's way.

Halladay tossed a complete-game, four-hitter on Monday against the Los Angeles Angels and then watched Towers follow with one of his better outings despite losing his seventh straight game.

Blue Jays righty Josh Towers has six wins in 11 career decisions against Tampa Bay. (Canadian Press)

Toronto's ace will be hoping for even better results on Sunday afternoon when Towers faces the Devils Rays to wrap up a three-game series in Tampa Bay.

Halladay owned the Devil Rays hitters on Saturday night, earning his fifth win of the season with another complete game. This time, he allowed three hits and threw just 88 pitches.

Towers, who has yielded 15 first-inning runs in seven starts, blanked the Oakland Athletics through the first three frames on Tuesday before he was yanked in the fourth after giving up a pair of homers to fall behind 3-0.

Toronto went on to lose 6-5, dropping Towers's record to 0-7 this season with a bloated 10.09 earned-run average. The 29-year-old became the first Blue Jays hurler to lose seven starts to begin a season since Dave Lemanczyk in 1978.

If Towers turns in a stinker in Tampa Bay, he could be demoted to the bullpen or triple-A Syracuse to work through his problems.

When asked Saturday how Towers was holding up under the pressure, Toronto manager John Gibbons told reporters, "I hope he sleeps good [Saturday night]. I know I'll sleep good.

"He's had his back up against the wall his whole career. There's pressure in this business every time you go out there [on the mound]."

After Tuesday's contest, Gibbons defended his decision to pull Towers by saying the bullpen needed work. "I watched him give up two home runs and fall behind."

While Towers hopes Gibbons has him on a longer leash Sunday, it should be noted that Francisco Rosario is the lone Blue Jays reliever to have made an appearance in the first two games in Florida this weekend.

On a positive note, Towers is 6-5 with a 4.52 ERA lifetime against Tampa Bay, including a 3-1 mark last season.

The Devil Rays are also last in the 14-team American League in hitting with a collective average of .232 and has one of the lowest slugging percentages (.387).

Outfielder Carl Crawford has posed the biggest threat to Towers in the past, going 15-for-37 (.405) with two doubles, a triple, three homers and six runs batted in. He also has five stolen bases against the righty.

Left-hander Casey Fossum (1-1) will start for Tampa Bay.

The former Boston Red Sox and Arizona Diamondback has put together three good outings but managed only three no-decisions.

And Fossum has had his troubles against Toronto. On April 7, he allowed six runs on seven hits in 4 2/3 innings to even his record at 2-2 with a 5.29 ERA in 13 career games.

Fossum has served up eight homers to the Jays, tied with Texas for the most he's allowed to a team.

Lyle Overbay and Vernon Wells went deep in Saturday's 8-1 win to give Toronto 52 home runs for the season, good for second in the AL.

But catcher Bengie Molina could give Fossum the most trouble. He has hit .357 (5-for-14) with three RBIs in his career against the lefty.

The Blue Jays (20-16) kept pace in the AL East on Saturday and remain two games back of the division-leading New York Yankees.

Toronto is off Monday before starting a three-game series in Anaheim against the Angels on Tuesday.