Pre-empting the BBC's many sister themed musings ahead of the Ladies Wimbledon Final between Venus and Serena Williams, don't be surprised if John McEnroe embarks on a rendition of the Aretha Franklin and Eurythmics classic "Sisters Are Doin' It for Themselves" during the build up to the final which has unsurprisingly been dubbed 'Sister Act III: Same Old Habit.'

Sibling rivalry is expected to be intense despite previous encounters between the pair turning into stale affairs.

"It's every Williams for themselves," a determined, but misguided Venus said, who has lost all their major finals since picking up the US Open title in 2001.

Don't be Sis-illy and back Serena to win in straight sets @ 9/4!

Sat 1.05pm BBC1

Wimbledon Match betting

Serena Williams 4 - 5
Venus Williams evens