The head of baseball's Internet company, which houses the office which controls the instant replay system, says the system is working.

Bob Bowman says calls by umpires on the field have been confirmed in 33 of 89 challenges and overturned in 30. For 25 others, calls stood because of a lack of "clear and convincing" evidence. In one instance, umpires asked for a video review to check the balls-strike count.

Bowman said he knows the system has "arrived because ESPN is already criticizing us. And it must be great to be perfect the way ESPN is." An ESPN spokesman declined to comment.

Commissioner Bud Selig (SEE'-lig) goes further saying the system has been "remarkable." He wouldn't say whether MLB would make any adjustments during this initial season.

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