Venus Williams has the edge over little sister Serena.

It’s been five years since we last saw the Williams sisters face off in the finals of a major tennis tournament. The Wimbledon odds say it’s time for a rematch. We still have the semifinals to play, but Serena Williams is the favorite on the championship futures market at 11-10, edging out older sister Venus at 6-5.

Serena overtook Venus in the WTA pecking order starting in 2002 with a win at the French Open finals, the first of five in a row for Serena at grand slam events. These weren’t always the best displays of tennis; the two sisters were sometimes accused of fixing their own matches, but the simpler cause was a lack of killer instinct.

Now that both players have gotten on a bit in tennis terms (Venus is 28, Serena 26), I’ll go with the elder stateswoman. Her track record on grass is superb; on any other surface, Serena’s baseline game would give her the advantage.