Olym-Picks: Friday's Top Tips at London 2012

Swimming: women's 800m freestyle - 7:45pm

Rebecca Adlington turned in a battling display to win bronze over 400m earlier this week, but should be confident of going one better in her favoured event tonight. Adlington was the quickest in qualifying on Thursday and appears relaxed and confident of defending her Olympic crown.

The British sensation is 1.48 to record a victory tonight, which looks hard to argue with. If you want a higher-odds bet, consider backing 15-year-old (yes, you read that correctly) American Katie Ledecky to sneak past Danish campaigner Lotte Friis at 5.00.

Women's handball: Brazil vs Russia - 4:15pm

The Copper Box plays host to a clash of the titans this afternoon, with in-form Brazil facing Russia, who were silver medallists in 2008. Brazil are unbeaten in the competition so far, having battled to wins over Croatia and Montenegro before demolishing Team GB on Wednesday. Russia will be looking to bounce back after losing to Croatia in their last outing.

2.70 for Brazil to win looks like decent value given their form this week, as does the 1.85 available on Ana Paula Rodrigues bagging more than 3.5 goals; she has 14 from three games so far.

Women's volleyball: USA vs Serbia - 8pm

The form book tells the whole story for this one: the USA have won all three of their games, whilst Serbia have lost all of theirs. With Logan Tom, Jordan Larson and the amazingly-named Destinee Hooker in imperious form, it would take a fool to bet against the favourites here.

1.01 for a USA win won't be tempting anyone, however. Instead consider USA -2.5 sets at 1.40, or even under 130.5 total points at 1.90. If the USA hit their stride, this one could be over before it's even begun.