YANKEES 5, ORIOLES 4NEW YORK — Andy Pettitte stopped the Orioles once again, Eduardo Nunez returned with a go-ahead hit and the New York Yankees beat Baltimore 5-4 Saturday for a season-high sixth straight win.The Yankees overcame Chris Davis’ major league-leading 33rd home run and yet another double from Manny Machado, who was celebrating his 21st birthday. The Orioles have lost four of five.The 41-year-old Pettitte (6-6) earned his 251st win, tying Hall of Famer Bob Gibson for 44th place on the all-time list.Pettitte stretched his unbeaten streak against Baltimore to 11 starts dating to 2007, winning eight times. Overall, he is 28-6 against the Orioles — only Yankees great Whitey Ford (30) has beaten the Birds more often since the franchise moved from St. Louis to Baltimore for the 1954 season.Mariano Rivera worked the ninth for his 29th save.Nunez came off the 60-day disabled list before the game and played for the first time since a strain on his left side slowed him in early May.