In the match between Casper Ruud and Lucas Klein, I expect Ruud to win. The Norwegian has shown excellent form, winning several big matches in Mexico. His game on slow hard courts should be more stable and stronger than Klein's. Ruud has a great serve, which will allow him to control the game on his serve. Additionally, in baseline exchanges, Ruud is likely to outgun Klein, who showed weak results after a five-setter with Zverev. Taking into account the factors mentioned above, a bet on Ruud's victory seems to be the safest in this match.