Alex Rodriguez believes he knows who’s at fault for the Yankees’ season ending before the ALCS. And it’s not Aaron Boone.

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The former Yankees third baseman not only defended the Yankees manager but also took a shot at the team’s roster construction after the Bombers’ 5-2 loss to the Blue Jays in Game 4 of the ALDS on Wednesday night.

Rodriguez, talking on the FS1 postgame show, spoke highly of Boone and suggested that the Yankees roster handcuffed the manager.

While he didn’t call out general manager Brian Cashman by name, Rodriguez listed the issues — catcher, designated hitter and first ba

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