The tennis one should include Maureen Connolly - in fact her streak was 9 grand slams - she won every one she took part in from 1951 onwards.
You might also include Esther Vergeer if you fancy it, whose winning streak in wheelchair tennis was at 470 when she retired, with a streak of 21 grand slams undefeated.
What a record of Jahangir!!!
You might also include Esther Vergeer if you fancy it, whose winning streak in wheelchair tennis was at 470 when she retired, with a streak of 21 grand slams undefeated.