Roger Federer

* winning 15 grand slams...more than any other

*21 semi finals in a row. There are only 4 grand slams a year. gotta be fittest for five big years. that too without losing rythm and top form.

*reaching in the final of wimbledon for seven straight years. even (so called ) sampras-the wimbledon king couldnt do it .

*Winning the French Open beside other three majors. many great players couldnt do that except bjon borg. there are some others like agassi, laver who did that but bjon borg was lil extra.

*winning 5 US Open in a row. no one has done it. closest competitor was Lendl who appeared in 8 straight US open final but could make only 2 out of it.

* Playing 16 in last 17 grand slam finals.

*and so on n on n on

So how could any other player be the GOAT (greatest of all time) in the tennis history?

Margaret court  , 62 Grand Slams including 24  singles.

Rod Laver who lost 5 glorious years, but still his winning percentage of grand slam was phenomenal. Had he not lost those five years only god knows what record he would have had. He won all the four grand slams for two years. Only player to do so.

Roger is a legend but so does these two who I think are on par.   While Andre Agassi brands Laver's Slams a "Godlike" achievement. Rod Laver himself thinks that if Roger continues this way he will be the greatest of all time in everybody's mind.