Chances per week are much more determined by pitching staff (GB/FB ratio) than by how many innings a player plays. The Brewers had a pretty high FB% staff this year (not many K's and no real sinker balling starter). The evidence is in UZR, the ratings of each "Pie slice" determining that the average OF makes more plays in given parts of the field than Braun does. Here's my terrible drawing of what UZR tries to represent: http://img519.imageshack.us/img519/965/uzr.gif So, for a given type of hit (fly ball or line drive) an average LF makes the plays in each one of those zones a certain percentage of the time. Anytime an out is made, the fielder gets + runs, based on the inverse of that percentage. (An out vs a non out is .8 runs, so say the play is made 60% of the time, if the fielder makes the out, then he gets credit for .4 outs, which you can then multiply by the .8 runs/out to get the number of runs it is worth)