Americans go from strength to strength

Wimbledon is guaranteed a Williams in the womens' singles final

With three Americans in the last four, BBC TV commentator Pam Shriver is keenly anticipating Thursday's women's semi-finals.

It is great for American tennis to have three women out of the four in the semi-finals.

And we know for sure we will have one Williams in the final - the question is, which one?

It is very hard to tell whether Venus or Serena will win, although recent form suggests Serena may just hold the edge.

She has been more consistent and her serve has proved more reliable.

Serena has already shown she can cope with the pressure at the big majors, having triumphed at the US Open

Pam Shriver

Perhaps more technically gifted than her sister, Serena's controlled aggression has reaped rewards over the last year.

And she has already shown she can cope with the pressure at the big majors, having triumphed at the US Open.

As for Venus, her serve has had a tendency to fall apart, as it did when she lost to Martina Hingis at Flushing Meadow last year.

However, beating Hingis in the quarter-final is sure to have given her a huge confidence boost.

If her nerve and serve holds up, Venus certainly has a good chance.

Lindsay Davenport is tipped to continue her march

As for the other semi-final, Lindsay Davenport should come through comfortably enough against Jelena Dokic.

The young Australian may not have played a lot on the tour, but in two years at Wimbledon, she has won a lot more matches than many other women and proved herself a good grass court player.

However, Lindsay is now one of the best, if not the best, big match player on the circuit.

She hasn't been in great form so far at Wimbledon this year, but a semi-final should see her fully focused on the job in hand.

Seeing off a determined Monica Seles should also have sharpened her game, and I fully expect her to come through in straight sets.