Jayawardene went on to score a century before he was dismissed for a 60-ball 124 in the 19th over.
Adam Gilchrist (38) and Mahela Jayawardene gave Sagittarius Strikers a good start, scoring 102 for the first wicket.
Michael Carberry chipped in with 23 off 14 to lift the team to 227 for 3.
Michaeal Lumb (13) struggled to get going and fell first with just 20 runs on the board. Libra Legends were soon reduced to 45 for 3.
Libra Legends kept losing wickets and though Sean Ervine struck a 20-ball 55, they were never really in the chase and eventually fell short by 63 runs.