Ben Rice took another step Friday in proving his value in the big leagues.  At the start of the season, the Yankees were hesitant to use him against left-handed pitchers, often leaving the catcher-turned-first baseman out of the lineup.  However, he continued to make his case to the Yankees that he can be matched up against anyone when he ripped a fifth home run of the season off a lefty in the Bombers’ 7-2 win over the Orioles .  In the bottom of the second inning, Rice hit a three-run blast off Cade Povich to give the Yankees an early 5-1 lead.  The 27-year-old does not feel he has established himself against left-handed pitchers just yet.  “I feel like I’ve taken some good at-bats against them. I don’t know if established would be the right word,” Rice said after the game. “I’m always confident in myself regardless of who is on the mound.…