(Sports Network) - Roy Halladay tries to win his fifth straight decision this evening when the Toronto Blue Jays open a four-game series with the Minnesota Twins at the Metrodome.

Halladay has been sensational since returning from appendectomy surgery, winning four of his five starts while pitching to a 3.58 earned run average in that time. Halladay's latest win came on Wednesday against the Los Angeles Dodgers, as he allowed a run and six hits in eight innings to improve to 8-2, while lowering his ERA to 4.08.

The right-hander is a perfect 5-0 against the Twins with a 2.20 ERA in nine games, seven of which have been starts.

Toronto enters this series after sweeping a three-game weekend set from the Colorado Rockies, culminating with a 5-0 win on Sunday at Rogers Centre. Dustin McGowan had a no-hitter broken up with a leadoff single in the ninth inning and Frank Thomas belted his 499th career home run to lead the way.

McGowan (4-3) issued just one walk through eight innings before Jeff Baker led off the ninth with a sharp single through the middle. The Toronto right-hander then retired the next three batters to complete the one-hit shutout.

The no-hitter would have been just the second in Blue Jays history and first for the team at home. Dave Stieb threw the first gem for Toronto at Cleveland on September 2, 1990.

Thomas, meanwhile, clubbed a solo homer in the fourth inning. He is one shy of becoming the 21st member of the exclusive 500-homer club.

Vernon Wells belted a three-run homer in the victory, Toronto's fourth in its last five games. Wells, in the leadoff spot for the third straight game, finished 1-for-4. He was 2-for-4 with a homer and three runs scored in Friday's opener and was hitless in four at-bats Saturday.

Minnesota also won on Sunday, as Joe Mauer belted a pair of homers and drove in three runs in a 7-4 victory over the Florida Marlins in the rubber match of a three- game set at Dolphin Stadium. Jason Bartlett finished 1-for-3 with two runs batted in for the Twins, who have won four of five games.

Johan Santana (8-6) allowed just two runs -- one earned -- on five hits to pick up the win. The reigning AL Cy Young winner punched out eight and walked just one. Santana also helped himself at the plate with an RBI triple.

The Twins again played without reigning AL MVP Justin Morneau, who remained in the hospital after suffering a bruised lung following a collision at home plate with Florida catcher Miguel Olivo in Friday's game. Morneau will likely fly back to Minnesota at some point today, but will probably miss the rest of the week.

Heading to the hill tonight for the Twins will be right-hander Kevin Slowey, who is 2-0 with a 4.43 ERA. Slowey, who has never faced the Jays, received a no-decision in his last start last Sunday against the Milwaukee Brewers, giving up four runs and eight hits in 5 1/3 frames of his team's 10-9 loss.

Minnesota took two of three from the Blue Jays earlier in he season and is 12-10 in the series since the start of the 2004 campaign.