As expected, Mike Aviles was named the starting shortstop in Boston to begin the season. His main assets are his contact rate (86 percent career) and his speed. Aviles has stolen 14 bases each of the past two years, and did so in just 286 at-bats last year. A consistently low walk rate makes getting on base a struggle, though, which could eventually cut into his playing time somewhat. At this point, though, that doesn't seem to be a major concern, as manager Bobby Valentine is thinking of using Aviles in the leadoff spot.