Delgado missed 33 games
Delgado batted fourth in Toronto's lineup against Seattle, hitting a double in his first at-bat. He finished 1-for-3 in a 7-6 win. He hadn't played since May 29.
"After five weeks of rehab and exercise, and a couple of rehab games I feel good enough to play again," Delgado said.
The Blue Jays went 13-20 without him, scoring half a run less per game.
"It's a relief to have him back," manager Carlos Tosca said.
Toronto optioned right-hander Adam Peterson to Triple-A Syracuse. He was 0-0 and gave up five earned runs in 2 2/3 innings with the Blue Jays.
Delgado was second in AL MVP voting last year after hitting .302 with 42 homers and a major league-leading 145 RBIs.
Wells, sidelined since June 16 with a strained right calf, isn't expected back until August. Catalanotto, out with a strained right groin, isn't expected back until after the All-Star break.
Copyright 2004 by The Associated Press