Jansen went 1-for-4 with a walkoff two-run homer in Saturday's 7-5 win over the Royals.
Jansen came to the plate with one out in the ninth inning and came through on a full count for the Blue Jays. The 24-year-old has struggled this season with a .560 OPS, but he's looked better in June with a .246/.328/.404 slash line in 18 games.