Prior to the Kurukshetra war, there were at least two occasions when Duryodhana and his (99) brothers were caught by opposing kings (once by Drupada and another time by a Gandharva king). On both occasions, upon the instructions of Yudhisthira, Bhima saved all of them. Eventually though, all 100 of them were killed by Bhima himself!
Anandatirtha Prathishtana 