Cape Town - Vodacom Blue Bulls Under-19 scrumhalf Lohan Jacobs, will join the SA Under-20 squad in Parana on Wednesday after Freddie Muller was ruled out of the 2010 IRB Junior Championship due to injury.
Muller sustained an acute ankle ligament injury during a contact training session in Parana. The Baby Boks play Scotland on Wednesday evening in their second Pool C game in Sante Fe at 19:00 SA time. Jacobs has previously been involved in the SA Under-20 structures.
He participated in the Baby Boks' three-match tour of France in February earlier this year and was also part of SARU's Under-18 High Performance squad in 2009.
"Obviously we are disappointed to lose a player of the caliber of Muller who has been part of our build to the World Champs since December," said SA Under-20 coach Eric Sauls.
"He toured with the SA under-20s to France earlier this year and he also competed in our two international friendlies against Argentina.
"However, we must also not forget we are looking forward to play four more games within the next 13 days, so it's going to be important that we maintain a fit group of 26 players for our remaining matches."