Racing PositionsNats put 10 on IL before opener, win on walk-off5YTigers agree to minor league deal with Mercer6YRoss to paternity list among several Tigers moves7YOlney: How the Yankees could replace Miguel Andujar7YBuster OlneyReports: Tigers, SS Mercer agree to 1-year deal7YPirates' Harrison excused for personal matter8YLaw: Re-drafting the first round of the 2008 MLB draft8YKeith LawPirates sign deal with Cole amid trade talk8Y