The Blue Jays lead the majors with 195 homers.
"We had our work cut out for us with Verlander on the mound," Marcum said. "The guys came out and did whatever they could to try and get some runs off of him but he's one of the better pitchers in this game.
"I tried to do whatever I could to keep us in the game and was able to do that for six (innings) and the bullpen did a great job of keeping us there."
Miguel Cabrera hit a solo homer for the Tigers, who had won six of seven games entering Friday's tilt. Johnny Damon tied the game in the ninth with an RBI single and starter Justin Verlander was solid in eight innings, allowing two runs on five hits with eight strikeouts.
Cabrera extended his hitting streak to 10 games.
Detroit went 1-for-16 with runners in scoring position and stranded 16.
Jeremy Bonderman was expected to start tonight's game for Detroit, but the injured hurler has been replaced by righty Alfredo Figaro. Making just his fourth Major League start, Figaro owns an 0-1 record and a 5.79 ERA. He went 10-6 in 23 starts at the Triple-A level and has thrown only 4 2/3 innings in the majors this season.
Figaro will be facing Toronto for the first time today.
Slated to take the hill for Toronto is Brandon Morrow, who looked good in a no-decision against the Yankees on Monday. In that game, the 26-year-old righty permitted only two runs while striking out 12 batters. He is now 9-6 this season with a 4.39 ERA and owns a 7-1 home record with a 2.84 ERA.
Morrow has pitched 10 career innings against the Tigers and is 0-0 with a 1.80 ERA.
Toronto won five of eight matchups with Detroit a year ago.