Oklahoma State is running out of chances to earn its first Big 12 win this season.The Cowboys hope to pick up their initial conference victory — and avoid a seventh straight loss overall — when they visit TCU on Saturday night in Fort Worth, Texas.This weekend likely marks the best remaining chance for Oklahoma State (3-6, 0-6) to earn a league win. The Cowboys’ final two games will be against Texas Tech and Colorado, and both of those schools are in the top half of the league standings.That said, TCU (5-4, 3-3) is no slouch. The Horned Frogs had won three of four games before dropping a 37-34 decision to Baylor last week on the final play of the game.Josh Hoover passed for 333 yards for the Horned Frogs, connecting with Jack Bech five times for 98 yards and two scores in a losing effort.”We played a clean game,” TCU coach Sonny Dykes said. “We didn’t turn the football over. We didn’t capitalize on every opportunity that we should have, clearly. It’s frustrating.”Meanwhile, Oklahoma State’s six-game skid surprisingly has featured tight losses to ranked foes Utah and BYU and blowouts at the hands of unranked opponents West Virginia and Arizona State.