sentences:  For example, from 1900–1920, the average number of wins for the AL league leader was 30.8; from 1990–2010, it was 20.9.Ties for the win championship are common.The most recent tie in the American League was in 2012, when Jered Weaver and David Price tied for the lead with 20 wins each, and the most recent tie in the National League was in 2011, when Ian Kennedy and Clayton Kershaw tied with 21 wins each.