The Celtics saw their winning streak end at five games with a 91-79 loss to the Oklahoma City Thunder this afternoon. The C’s fell to 2-9 on the road against the Western Conference, and it was hard to expect much else against the team with the third best record in the league. Kevin Durant led the Thunder with 23, while Paul Pierce had 20 to top the visitors. The Celts hung in as long as they could, but when they missed their first nine shots from the floor to open the fourth quarter, a close game (68-65) quickly turned into the Thunder’s largest lead of the day to that point (12). Boston College product Reggie Jackson had six points in an 11-2 run that made it 79-67, a burst interrupted only by two Pierce free throws. The C’s made just two of their first 18 shots in the quarter as the Thunder went ahead by 14. Oklahoma City held the Celtics to just 25 percent shooting in the second half. "We were bad all game offensively," coach Doc Rivers said. "We were forcing things and offensively the ball stuck at times. Their length bothered us at times. Sometimes you want to win too bad, and that was us today." Two Jason Terry 3-pointers gave the Celts a bit of life, down by a manageable eight points. But with just two minutes left against the defending NBA Finalist, chances were less than slim.