The Mumbai Indians have signed West Indian batsman Lendl Simmons as a replacement for Jalaj Saxena while the Royal Challengers Bangalore have drafted in Rilee Rossouw to replace Nic Maddinson.
Both Saxena and Maddinson have been ruled out of the remainder of the tournament and the franchises were allowed to replace them with players who went unsold at the auction earlier in the year.
Simmons, who has played eight Tests, 58 One-Day Internationals and 30 Twenty20 Internationals for the West Indies, is set for his IPL debut.
The Mumbai side lie at the bottom of the standings, partly thanks to a badly misfiring batting unit, to which Simmons will add experience.
He will be available to play for them against the Sunrisers Hyderabad tomorrow (30th April).
Maddinson was ruled out of the tournament with a fractured finger and into the Royal Challengers squad comes South African Rossouw.
Rossouw, who has a first-class highest score of 319, has played 55 Twenty20 matches, scoring eight half-centuries with an overall strike-rate of 126.81.
He joins compatriot AB de Villiers in the squad although with Chris Gayle now back at the top of the order, his chances of making an appearance would appear to be slim.
Opener Maddinson deputised for Gayle as the West Indian missed Bangalore's first four matches with a back problem.
© Cricket World 2014