Takahiro Araki, Yakult (First Time)
May 14 vs Chunichi at Botchan Stadium. Bottom of the ninth with the score tied at one. Bases loaded with two out. Araki hit a walk-off grand slam to left. The Dragons took the early lead with a run in the first inning. The Swallows answered back with a run of their own in the bottom of the second inning. The teams remained locked in a one-all tie until the bottom of the ninth. Chunichi pitchers walked three batters in a row to load the bases and set the stage for Araki’s walk-off grand slam. This was Yakult’s second walk-off grand slam of the season, a first for a team in the Central League.
Shunta Goto, Orix (First Time)
May 7 vs Nippon Ham at Kyocera Dome. Bottom of the 12th with the bases loaded, one out, and the score tied at three. Shunta recorded a walk-off single to right. The Fighters scored first with two runs in the third. The Buffaloes scored a run in the bottom of the inning and two more in the fourth to take a 3-2. Nippon Ham tied the game at three in the sixth. Orix loaded the bases with two hits and a walk in the bottom of the 12th. For Shunta, the deciding hit was his fourth of the game (first four-hit game of his career) and the second walk-off hit of his career. He recorded another walk-off hit on May 31 against Yakult.
Source: NPB 6/8/2017