In a tournament where no team has managed to stay unbeaten, the first semi-final will be contested between two of the most consistent teams in the history of the World Twenty20.
Pakistan, who qualified for the semi-finals on the basis of a better net run rate than India, have defied the unpredictable nature of the format by making the last four in each of the four tournaments.
Only Michael Hussey's remarkable 60 ended their hopes of making a third consecutive final in the 2010 World Twenty20.
Sri Lanka, who went through the Super Eights undefeated, are the only team to come close to matching Pakistan's consistency.
After a poor run in the first World Twenty20 in 2007, they made the final in 2009 and lost out to England in the semi-final in 2010.
On a pitch that is increasingly aiding spin bowlers, the clash between the two sides could be decided by the performance of the slow bowlers.
Not only have Pakistan been the most successful team in Twenty20 internationals, they have also had the better of Sri Lanka in the head-to-head clashes.
In three matches between the two teams in the World Twenty20, Pakistan have won two including the 2009 final at Lord's.
The dominance has also extended to matches played in neutral venues (4-2) and in Sri Lanka (2-1).