Racing PositionsNats catcher Avila, 34, will retire at end of season9MNats put 10 on IL before opener, win on walk-off1YNats add backup catcher Avila on 1-year deal1YTwins finalize deals for Pineda, Avila3YSources: Twins, catcher Avila reach $4.25M deal3YDiamondbacks C Avila off IL, to play vs. Braves3YD-backs' Avila hurt on home run trot, put on IL3YLaw: Re-drafting the first round of the 2008 MLB draft4YKeith LawBaserunning gaffe robs Marrero of 1st homer4YOlney: Nobody may want an offseason do-over more than Scott Boras4YBuster Olney