The two-game series will be the first of two this year between the teams, with the rematch set for June 25 and 26 at Minute Maid Park. As “geographic rivals,” the Astros and Rockies play each other four times per season instead of the customary three between most interleague matchups. To wit, Houston plays division rivals 13 times each (52), fourteen of the NL teams three times each (42), the Rockies four times, six teams in the AL six times each (36) and the other four teams seven times each (28). 52+42+4+36+28=162
Houston’s geographic foe was a lot clearer when they were in the National League.