Here's what we know: So far as a starting pitcher, Marcus Stroman has a 1.50 ERA, 1.17 WHIP and 9.8 strikeouts per nine innings. He followed up his first gem May 31 with another quality start Sunday against the Cardinals. Given his minor-league track record -- in particular, his 10.6 strikeouts per nine innings and 2.4 walks per nine innings -- what he's done in those two starts is in no way a surprise.
Here's what we don't know: Why he struggled so much in five relief appearances prior to those two starts, allowing four earned runs in each of his last two to earn a brief trip back to the minors.
He may have simply been unaccustomed to the role. The Blue Jays thrust him into it without transitioning him at Triple-A first, forcing him to adjust on the fly. And adjusting on the fly while facing major-league hitters for the first time is a recipe for disaster.
Stroman's overall numbers are still inflated from his time in the bullpen, but given his upside, I say he's earned his place on mixed-league rosters with his first two starts. After all, that's the first we've seen of him in his intended role.