The race for the semi-finals

Sri Lanka haven't yet lost a match in the tournament, but their first defeat could knock them out of the ICC World Twenty20. That's because New Zealand, the team they'll play on Tuesday, have a superior net run rate, and it will remain that way if Sri Lanka lose that game. If Pakistan win, they will almost certainly get through to the semi-finals along with New Zealand. So, even though Sri Lanka have a spotless record in the tournament so far, their narrow margin of victory against Ireland means they'll face a must-win situation again on Tuesday, unless Ireland repeat their World Cup heroics against Pakistan on Monday.

Pakistan, for their part, face a must-win situation themselves. Thanks to their comprehensive win against New Zealand, their net run rate is good enough to ensure that a win by almost any margin will see them through. There is the extremely unlikely scenario of Pakistan's NRR dropping despite a win, and Sri Lanka's moving above Pakistan's despite a loss, but the likelihood of such a situation is so slim that it can almost certainly be ruled out.

For New Zealand, the equation is simple - beat Sri Lanka and make it to the last four, lose and be knocked out.

Group F

Teams	Mat	Won	Lost	Tied	N/R	Pts	Net RR	For	Against
Sri Lanka	2	2	0	0	0	4	+0.700	294/40.0	266/40.0
New Zealand	2	1	1	0	0	2	+0.943	297/40.0	215/33.1
Pakistan	2	1	1	0	0	2	+0.740	231/33.1	249/40.0
Ireland	2	0	2	0	0	0	-2.300	250/40.0	342/40.0

England's win against India means the equation in this group is pretty straightforward: South Africa are already in the semi-finals, where they'll be joined by the winner of Monday's game between West Indies and England. If that game is washed out, West Indies will progress on the basis of their superior net run rate.

Group E

Teams	Mat	Won	Lost	Tied	N/R	Pts	Net RR	For	Against
South Africa	2	2	0	0	0	4	+0.898	297/38.2	274/40.0
West Indies	2	1	1	0	0	2	-0.150	319/38.4	336/40.0
England	2	1	1	0	0	2	-0.287	264/40.0	264/38.2
India	2	0	2	0	0	0	-0.416	303/40.0	309/38.4