I thought that Lewis played the foul ball poorly as well. Not an easy play but it looked like it got jarred from his glove when he hit the rail. He had time to get to the rail and use it for balance. Then he could easily make that catch.
Stat they showed on the broadcast is that Buxton is the 4th worst, for qualifying batters, at hitting with RISP> He's batting .154 in those situations.