Justin Colbert led off the 15th with a double into the right field corner and advanced to second on Ty Wright's sacrifice bunt. Missouri reliever Andrew Johnston (2-1) then intentionally walked Corey Brown and Trey Rachal to set up a force at every base before giving up Carr's homer on the first pitch.
Oklahoma State snapped a three-game losing streak and improved to 25-14 on the year and 6-7 in Big 12 play, while Missouri fell to 27-7 overall and 8-2 in league action.
Rusty Ryal staked the Pokes to an early 1-0 lead with his sixth homer of the year in the second inning.
The Tigers took a 2-1 lead in the fourth on a RBI double by James Boone and a RBI infield single by Jacob Priday.
OSU tied it in the sixth on Ty Wright's solo homer to left off of Missouri ace Max Scherzer. The hard-throwing righthander allowed two runs on three hits in 7.2 innings of work with nine strikeouts and four walks in the no-decision.
Cowboy southpaw Blake Kronkosky had an impressive outing in his first start in Big 12 play. He scattered seven hits over eight innings and allowed two runs with eight strikeouts and two walks in the no-decision.
Senior Scott Richmond (3-2) pitched seven innings of three-hit scoreless relief with 10 strikeouts in the winning effort.
All six of the Cowboys runs came via the home run. OSU now has a NCAA best 65 round-trippers with Adam Carr leading the nation with 16 of his own and 66 RBI.
The teams will be back in action Saturday afternoon at 2 p.m. It will be a battle of southpaws as sophomore Nathan Culp will go for Missouri, while Oklahoma State will counter with Thomas Cowley.
Cowboys Slam Tigers
GoPokes Top Stories
OSU-West Virginia: Defensive Pressure PointThe Cowboys know they will have their hands full with West Virginia quarterback Skyler Howard.
GoPokesYesterday at 4:48 PM
Ranking All Of Mike Gundy's 99 WinsMike Gundy's first win as a head coach came on Sept. 3, 2005 – a 15-10 victory over Montana State – and over the last 12 years he has added 98 more. As he closes in on No. 100 –…
GoPokesYesterday at 6:40 AM
Cowboys Will Be Young, But Start At No. 1The Oklahoma State wrestling team begins the 2016-17 season as the No. 1 ranked team in the nation, and head coach John Smith expects several freshmen to play key roles.
GoPokesYesterday at 6:02 AM
OSU-West Virginia: Offensive Pressure PointThe Cowboys offensive line is going to have to play well if Oklahoma State has any chance of upsetting West Virginia on Saturday.
GoPokesMonday at 7:16 PM