SEATTLE -- Pinch hitter Mark DeRosa broke a tie with a two-out, two-run single in the eighth inning, and R.A. Dickey outdueled Hisashi Iwakuma as the Toronto Blue Jays beat the Seattle Mariners 3-1 Monday night.
Dickey gave up just one run over 7 2/3 innings but was trailing 1-0 before the Blue Jays (52-60) put together a three-run rally in the eighth.
Brett Lawrie hit a leadoff triple, and Jose Reyes tied the score 1-1 with a one-out RBI single, knocking Iwakuma out of the game.
The Blue Jays then loaded the bases with two outs against Yoervis Medina. Oliver Perez replaced Medina, and DeRosa came on to bat for Adam Lind. DeRosa drove an 0-2 pitch to left field, scoring Reyes and Jose Bautista to give the Blue Jays a 3-1 lead.
DeRosa is hitting .357 (5-for-14) as a pinch hitter this season.
Dickey (9-11) allowed eight hits and two walks while striking out five. The only run he permitted came on a solo home run by Seattle's Justin Smoak to lead off the eighth inning, giving the Mariners a 1-0 lead.
Iwakuma (10-5) wound up charged with two runs and four hits over 7 1/3 innings. He suffered his first loss since July 4, having gone 3-0 over his past five starts heading into Monday.
Toronto's Casey Janssen pitched a scoreless ninth to earn his 20th save of the season.
Lawrie went 3-for-4, falling a home run short of hitting for the cycle.
Seattle (52-60) stranded seven runners while losing for the eighth time in 14 games since manager Eric Wedge left the team following a minor stroke.
NOTES: From the no-news-is-good-news department, Toronto found out Monday that OF Melky Cabrera was not among the players disciplined Monday for their ties to Biogenesis. Cabrera already served a 50-game suspension for violating the league's drug policy. ... The Blue Jays reinstated LHP J.A. Happ from the 60-day disabled list and named him Wednesday's probable starter. Happ has been sidelined since taking a line drive off his head in a May 7 game in Tampa Bay. A knee injury Happ sustained trying to avoid the line drive is being cited as the injury that has kept him off the field until a recent rehab assignment. To clear a spot on the 40-man roster, Toronto designated RHP Michael Schwimer for assignment. ... Heading into Monday's game, the Mariners held a 9-2 record this season in games played on Mondays. ... At least half of the fans attending the game at Safeco Field in Seattle were wearing Blue Jays colors in support of Canada's lone major league team. The Canadian border is only about 2 1/2 hours from Seattle, and many fans made the trip from British Columbia to support the Blue Jays. ... Monday marked the second time that Iwakuma and Dickey have faced each other, with the Mariners winning 8-1 in the first meeting May 4 in Toronto.