2015 No-Hitter 4, Jeff Nelson (1; Hisashi Iwakuma)

HP Umpire Jeff Nelson called Mariners pitcher Hisashi Iwakuma's no-hitter, the fourth of 2015. Crew Chief Nelson was joined for Wednesday's Orioles-Mariners game by Laz Diaz (1B), Chris Guccione (2B), and Cory Blaser (3B). This is Nelson's first career no-hitter; crewmate Diaz most recently served as first base umpire for Tim Lincecum's no-hitter on July 14, 2013 (Plate Umpire Mark Wegner).

Wednesday's is the first MLB no-hitter since July 25, 2015 (Phil Cuzzi; Cole Hamels).

Nelson received 53 callable pitches from Iwakuma, a total of 39 balls and 14 called strikes. The look:

Balls: 38 called balls outside of strike zone / 1 called balls within strike zone = 38/39 = 97.4% Accuracy.
Strikes: 11 called strikes inside strike zone / 3 called strikes outside strike zone = 11/14 = <90.0% Accuracy.
Total Raw Accuracy Score = 49/53 = 92.5% Accuracy (+2 for Iwakuma).

Pitch f/x plot courtesy Brooks Baseball.
Note: This plot is a graphical approximation of the strike zone and is not the basis for analysis.