Complex sentence: There have been many questions on why the Detroit Tigers have not retired both Whitkaer's and Trammell's numbers recognizing their unique contribution not only to the Detroit Tigers but also to the game of baseball.
Split into simpler sentences: There have been many unanswered questions concerning why the Detroit Tigers have not retired both Whitkaer's and Trammell's numbers. They should be recognizied for their unique contribution not only to the Detroit Tigers but also to the game of baseball.