In this year’s postseason, relievers have received attention based on when (or if) they have entered the game. For the Toronto Blue Jays and closer Roberto Osuna, there were questions a week ago whether Osuna would be able to pitch at all in the postseason after being removed from the Wild Card victory over the Baltimore Orioles with a shoulder issue. Osuna pitched to four batters in that game, retiring them all and striking out two, but his availability for the recently completed Division Series against the Texas Rangers was in some doubt. Osuna has laid those doubts, as well as those that accompanied a less-than-stellar end-of-season run, to rest.
If you were to hazard a guess at which Blue Jays player was most important in this year’s playoffs — at least in terms of increasing the probability of winning games — you probably would not guess Roberto Osuna. You would also be right not to guess Osuna, as Josh Donaldson’s nine hits and a walk in 19 postseason plate appearances led to a team-leading .635 WPA over the Jays’ four postseason games. Osuna, however, is second on the team WPA leaderboard, despite pitching in only three of the four games and recording just five total innings.
Toronto WPA Leaders, 2016 Playoffs
Osuna, despite his shoulder issue, has now appeared in three of the four Blue Jays playoffs games (having not been needed in the Game 1 rout of the Rangers). In this year of the non-traditional closer use in the postseason, Osuna has yet to come in at the start of the ninth in a save situation. Every single appearance has been incredibly important — and has often coincided with the most important moments of each game, by leverage index.
Roberto Osuna Playoff Appearances
WC Game |
T9 (tied) |
0/0 |
1.1 |
2.32 |
2.32 |
Game 2 ALDS |
B8 (up 5-3) |
2/1 |
1.2 |
2.73 |
3.30* |
Game 3 ALDS |
T9 (tied) |
0/0 |
2.0 |
2.32 |
2.74 |
*The 3.30 LI occurred with Osuna on the mound in the ninth.
In the playoffs this year, Blue Jays pitchers have faced 15 batters at a point in the game when the leverage index had reached 2.0 or greater. Osuna has recorded eight of those high-leverage plate appearances — more than J.A. Happ (who had four in his start), Francisco Liriano (one), or Joe Biagini (two, one of which was a run-scoring double by Mitch Moreland in Game 2).
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