One of the most eagerly anticipated Challenge Cup semi-finals in years takes place on Saturday, and you can watch it live on BBC One.

Rugby League giants Leeds and St Helens meet at Huddersfield's Galpharm Stadium in a game that would have graced Wembley itself.

Without doubt, these are the best two sides in Super League.

They have the best attacking records, the best defensive records and their players will make up the bulk of England's World Cup squad in October.

Saints have been in imperious form of late, winning each of their last 15 matches. Their last defeat was on 6 April, some 112 days ago on Saturday.

It's a very tough game to call, but I think Saints' pack might just have too much power, too much size for Leeds.
Whatever the outcome I think it will be one of the great Challenge Cup games.

On Sunday, Wakefield face 2005 winners Hull FC live on BBC Two.

This is a game between two sides with great tradition, who are desperate to get back to Wembley.

Both of them are capable of beating any side on their day, but you're never quite sure what either of them will do and that is the beauty about this game.

I've tipped Saints in Saturday's game, but I wouldn't put a penny on this one. It will all depend on which players shine. If Danny Brough and Jamie Rooney take the game by the scruff of the neck, they could take Wakefield to Wembley.

On the other hand, if the likes of Kirk Yeaman can find the form that got him into the Great Britain tour party to Australia 18 months ago, or Adam Dykes is fit enough and can resume at half-back, it could be Hull's day.

I don't think the defences of either sides are quite what they should be, so it should be a high-scoring game.

Ray French will be commentating on BBC TV's coverage of Leeds v St Helens on Saturday.

Ray was talking to Paul Atherton.

Challenge Cup semi-final: Leeds v St Helens (1210, BBC One/online; 1230, BBC Radio 5 Live/online); post-match forum (1430, BBCi/online).

Challenge Cup semi-final: Wakefield v Hull (1510, BBC Two/online; 1530, BBC Radio 5 Live/online).

Cricket: Twenty20 Cup semi-finals (1130 & 1500, BBC Radio 5 Live sports extra/online); Horse racing: Ascot (1415-1645, BBC Two/online); Athletics: London Grand Prix (1430-1740, BBC One/online); Cycling: Tour de France (1500-1630, BBC Radio 5 Live sports extra/BBCi/online); Cricket: Twenty20 Cup final (1915, BBC Radio 5 Live/online).

Horse racing: Ascot (1330-1510, BBC Two/online); Cycling: Tour de France (1500-1630, BBC Radio 5 Live sports extra/BBCi/online); Siberia to the Sahara: A Snowboarder's Odyssey (1800-1900, BBC Two).