Complex sentence: Holtzman had an 18-14 record for the 1975 A's as they again won the American League's Western Division, but lost Games 1 and 3 of the ALCS to the Boston Red Sox as the A's were swept.
Split into simpler sentences: Holtzman had an 18-14 record for the 1975 A's as they again won the American League's Western Division. Holtzman lost Games 1 and 3 of the ALCS to the Boston Red Sox as the A's were swept.