This may have something to do with the Open Era starting that year (don't know if the stats are complete...), but it looks like Rod Laver only won one title in 1968, and that was Wimbledon.
And he wrecked his 1969 by winning the tournament in Philadelphia. His other four titles were the four majors.
Yes, the Open Era started in 1968 but I started counting from 1970 because that's when they started playing a fuller schedule so there was more of a chance to win other titles.
hat bloody journeyman Sampras, ruining the image of the game with his inconsistency.
Sampras and Goran are interesting in this list because they won on their last legs. Agassi is strange because he wins his 1st tournie (AO) and then has a pretty goo year as he made the YEC and got to the finals in that but didn't manage to win another title.