Table 1. Summary statistics on handedness in men’s professional tennis.

				Handedness (%)
Dataset	Category	N	N/A	Left	Right	Ambidextrous
Year-end rankings (1973–2011)	All players	3746	–	9.58	90.23	0.19
	Top 100	843	–	13.40	86.36	0.24
	Top 10	116	–	13.79	86.21	–
	World no. 1	16	–	18.75	81.25	–
Grand Slams (1968–2011)	All players (first rounds)	1926	5	10.88	88.96	0.16
	Finalists	99	–	17.17	82.83	–
	Runner-up	85	–	17.65	82.35	–
	Winner	52	–	21.15	78.85	–

This table shows the handedness distribution for male professional tennis players in different datasets and categories. The column “N/A” indicates the number of players whose handedness for playing tennis was not available.