Steven James Kline (born August 22, 1972) is an American college baseball coach for the IUP Crimson Hawks.

He is also a former professional relief pitcher who pitched for the Cleveland Indians, Montreal Expos, St. Louis Cardinals, Baltimore Orioles, and San Francisco Giants of Major League Baseball (MLB) over an 11-year career.

He induced a flyout from Scott Spiezio for his first major league out, and the baserunner (Ernie Young) was caught stealing on the next pitch.

He earned his first major league win as the Indians rallied to take the lead in the next half inning with Kline as the pitcher of record.

He posted a career high total for wins in a single season in 1999 (7), and achieved a rare feat by striking out 4 batters in an inning against the San Francisco Giants on August 17.

It was even inspiration for a Cardinals promotion at the ballpark in 2002, which the team called "Steve Kline Hat Day," and an ESPN feature on the subject.

[3] Kline was also active in the community with charity work, and quickly became known as an "everyman" who enjoyed spending time with fans and signing autographs.

In fact, in 2001, Kline was called upon to close out both Cardinals victories in their 5-game Division Series loss to the Diamondbacks, and he responded with 2 saves in those clutch situations.

It was noted that the home run was the first Kline had allowed to a left-handed batter in over 2 years (the last had been to Troy O'Leary on July 17, 2000).

Kline appeared in his 500th Major League game on August 13, 2003, pitching 1.1 scoreless innings against the Pittsburgh Pirates.

He did not surrender an earned run pitching at home at Busch Stadium, and held left-handed batters to a .143 average.

"[6] Following the 2005 season, in which he posted a 4.28 ERA, Baltimore traded Kline to the San Francisco Giants for set-up reliever LaTroy Hawkins.

On April 10, 2008, Kline signed a minor league contract with the Philadelphia Phillies and was assigned to their Triple-A affiliate, the Lehigh Valley IronPigs.

Then, in the World Baseball Classic Qualifier, which took place in Taiwan from November 15 to 18, 2012, Kline was the pitching coach of team New Zealand.

[11] He served as the pitching coach for the Richmond Flying Squirrels, the Double-A affiliate of the San Francisco Giants, from 2015 to 2017 and again from 2020 to 2021.

[12] On June 4, 2021, he was named head coach of Indiana University of Pennsylvania's Division II baseball team.

[13][14] Known for his colorful sound bites, he has accused umpires of favoring the New York Yankees[15] and has jokingly said he thought about putting one ump in the "Cobra Clutch".