St. Thomas is 4-2 overall and 2-2 in the Junior Intercounty Baseball League standings.
"Not focusing on wins and losses yet," Tomcats' coach Paul Pettipiece said. "Honestly, nothing to improve on right now. Guys are improving every game. Dugout is a blast. Guys love playing together."
Welland led game one, 2-0, after four innings, before knocking in five runs in the fifth inning, highlighted by a grand slam.
Trailing game two, 10-0, heading into the home half of the fourth inning, the Tomcats exploded for 13 runs. Welland pull to within a run, at 13-12, scoring once in both the fifth and sixth innings. St. Thomas took control of the game with four runs in their half of the sixth.
Pitcher Eric Pettipiece picked up the win for the Tomcats and Brett Reid the save after working the seventh inning.
Josh Hare had a solo home run, double, one walk and was hit by a pitch. Four Tomcats, Alex Liem, Alex Fishback, Xavier Jamison and Brad Verhoven, had a pair of singles. Brendon Johnston was patient man, drawing four walks.
St. Thomas has a upcoming home and home set with the Guelph Silvercreeks this week. The Tomcats travel to Guelph on Wednesday and host the Silvercreeks, Friday at Emslie Field. Both games start at 7:30 p.m.
An eight team 22U Ontario Baseball Association championship occurs over the long weekend in August, at Emslie and Cardinal fields.
The Tomcats face the Ilderton Red Army, out of the Southwestern Senior League, Thursday, August 5, at Labatt Park, in London. First pitch 7 p.m.