With a bit of selective amnesia -- and maybe even without it -- you can make quite a case for Brandon Morrow as the ace of the Toronto Blue Jays pitching staff.

Wednesday, Morrow tossed his second complete-game shutout in his last four starts, a 4-0, two-hit defeat of the Chicago White Sox. It was his seventh win of the year, matching Ricky Romero for the team lead.

More to the point, Morrow has evolved into a dominant pitcher with pin-point control who has the savvy to let his defence do the work and the ability to reach back when necessary.

In Wednesday's game, he gave up two singles, both to A.J. Pierzynski, and didn't walk a batter until he allowed two in the ninth inning. One other batter, Adam Dunn, reached base on an error. One of the Pierzynski singles was erased after pinch-runner Brent Lillibridge was caught stealing in the eighth.

"It was almost all fastball-slider," said Morrow. "I threw a few changeups to the lefthanders to try to keep them honest. But when I've had fastball command, down, on both sides of the plate, that's when I've been at my best and that's what I had tonight."