<human>: Background: Bjorn Borg was born in Stockholm, Sweden, on 6 June 1956, as the only child of Rune and Margaretha Borg. He grew up in nearby Sodertalje. As a child, Borg became fascinated with a golden tennis racket that his father won at a table-tennis tournament. His father gave him the racket, beginning his tennis career.
Context: In June, he overcame Gerulaitis, again in straight sets, for his fifth French Open title. Again, he did not drop a set.  Borg won his fifth consecutive Wimbledon singles title, the 1980 Wimbledon Men's Singles final, by defeating McEnroe in a five-set match, often cited as the best Wimbledon final ever played - the only comparable match being the 2008 Federer - Nadal final. Having lost the opening set to an all-out McEnroe assault, Borg took the next two and had two championship points at 5-4 in the fourth. However, McEnroe averted disaster and went on to level the match in Wimbledon's most memorable 34-point tiebreaker, which he won 18-16. In the fourth-set tiebreak, McEnroe saved five match points, and Borg six set points, before McEnroe won the set. Bjorn served first to begin the 5th set and fell behind 15-40. Borg then won 19 straight points on serve in the deciding set and prevailed after 3 hours, 53 minutes. Borg himself commented years later that this was the first time that he was afraid that he would lose, as well as feeling that it was the beginning of the end of his dominance.  He defeated McEnroe in the final of the 1980 Stockholm Open, and faced him one more time that year, in the round-robin portion of the year-end Masters, played in January 1981. With 19,103 fans in attendance, Borg won a deciding third-set tie-break for the second year in a row. Borg then defeated Ivan Lendl for his second Masters title. CANNOTANSWER
Question: who did he win against in the previous 4?

Answer:
<bot>: Borg then defeated Ivan Lendl for his second Masters title.