Complex sentence: At 11 August 1965, he scored one goal when against Persebaya in the first leg, but lost in the second leg to Persebaya Surabaya 4--2, with the aggregate score 4--3 for Persebaya.
Split into simpler sentences: At 11 August 1965, he scored one goal when against Persebaya in the first leg. But in the second leg, he must lose to Persebaya Surabaya 4--2 with aggregate 4--3 for Persebaya.