By Berry TramelOSU’s first foray into the upper tier of Big 12 competition went well -- the Cowboys beat Iowa State 24-21 Saturday in Stillwater and solidified their status as the favorite to finish in the Big 12 football standings.But OSU still has a tougher road ahead than any other contenders.The Cowboys are 3-0 in the league and still are scheduled to play Kansas State and OU, plus Texas and TCU.Kansas State is 4-0 in the league, and the Wildcats still have OSU and Iowa State, as well as Texas.Iowa State is 3-1 but has the easiest schedule left.Read more on NewsOK.com