‘‘This is the toughest moment in my whole career,’’ Valverde said. ‘‘I had everything. These guys hit it. There’s nothing I can do.’’
NOTES: This is the seventh postseason walkoff win for the A’s in franchise history and first since Ramon Hernandez won it with a squeeze bunt in the 2003 division series against Boston. ... A.J. Griffin allowed two runs in 5-plus innings. He was the third Oakland rookie pitcher to start a game this series, the most ever by a team in a single postseason. The A’s used just two rookie starting pitchers in 147 postseason games before this year: Joe Bush in the 1913 World Series and Barry Zito in the 2000 division series. ... Triple Crown winner Miguel Cabrera has reached base in all 15 postseason games with the Tigers but has no RBIs this series.