On July 16, 1997 In Oakland, Mark McGwire hits his 33rd and 34th homers to lead the A’s to an 11 – 3 win over the hapless Royals. Jose Canseco strikes out in all five at-bats for the Athletics, tying an Oakland record. Combined with his three strikeouts on Monday, he ties a major league record with eight whiffs in two consecutive games.
Source
Baseball Reference July 16