years led  span of years led           player  titles won at point of lead  total career titles tournament at which lead began
0  1877 - 1880                  4     spencer gore                            1                    1                      wimbledon
1  1880 - 1883                  4     john hartley                            2                    2                      wimbledon
2  1883 - 1887                  5  william renshaw                            3                    7                      wimbledon
3  1887 - 1925                 39    richard sears                            7                    7               us championships
4  1889 - 1925                 37  william renshaw                            7                    7                      wimbledon
5  1911 - 1925                 15   william larned                            7                    7               us championships
6  1925 - 1967                 43      bill tilden                            8                   10               us championships
7  1967 - 2000                 34      roy emerson                           11                   12       australian championships
8  2000 - 2009                 10     pete sampras                           13                   14                      wimbledon

Table as JSON:
{"years led":{"0":"1877 - 1880","1":"1880 - 1883","2":"1883 - 1887","3":"1887 - 1925","4":"1889 - 1925","5":"1911 - 1925","6":"1925 - 1967","7":"1967 - 2000","8":"2000 - 2009"},"span of years led":{"0":4,"1":4,"2":5,"3":39,"4":37,"5":15,"6":43,"7":34,"8":10},"player":{"0":"spencer gore","1":"john hartley","2":"william renshaw","3":"richard sears","4":"william renshaw","5":"william larned","6":"bill tilden","7":"roy emerson","8":"pete sampras"},"titles won at point of lead":{"0":1,"1":2,"2":3,"3":7,"4":7,"5":7,"6":8,"7":11,"8":13},"total career titles":{"0":1,"1":2,"2":7,"3":7,"4":7,"5":7,"6":10,"7":12,"8":14},"tournament at which lead began":{"0":"wimbledon","1":"wimbledon","2":"wimbledon","3":"us championships","4":"wimbledon","5":"us championships","6":"us championships","7":"australian championships","8":"wimbledon"}}