 The Dallas Keuchel experiment in Milwaukee appears to be over. The one-time Cy Young Award winner, acquired from Seattle in late June for cash, was designated for assignment yesterday. Keuchel gave up five consecutive hits to open the fourth inning as the Brewers led an early five-run lead, slip away in a 6-5 loss to the Nationals on Saturday. In four starts with the Brewers, Keuchel posted a 5.40 ERA, allowing 10 runs and 23 hits in 16 and two-thirds innings without a decision.