SPIELBERG, Austria—Mercedes found welcome speed in the rain at the Austrian Grand Prix on Friday, with Formula One champion Lewis Hamilton leading a damp second practice ahead of teammate Valtteri Bottas. The conditions proved less to the liking of championship leader Max Verstappen. The Red Bull driver topped the leaderboard early on but drifted down to third place as the track became wetter. Hamilton was .189 seconds ahead of Bottas and .217 clear of Verstappen on Red Bull’s home track. But after losing the last four races to Red Bull, Hamilton remains wary about what will happen in qualifying on Saturday. “They’ve definitely got something extra in their bag, I already know that,” said Hamilton, whose last win was at the Spanish GP on May 9. “We’ve definitely made some small steps forward but not enough to close the (gap). I just expect them to turn up (with) a little …