Welcome to ESPN's fan vote, where you, the reader and sports fan, will decide which individual or team has been the most dominant in the 21st century.
In our first semi-final, we have Kohli's India, nearly impenetrable at home, squaring up against Usain Bolt, the greatest sprinter in history.
(Please vote in the poll at the bottom of this page to decide the winner.)
Kohli's India in home Tests (2015-present)
India, first under MS Dhoni as captain, and since the series against South Africa in 2015/16 have been near impregnable in home Tests. It began with four matches where the discussion veered towards the quality of pitches, but has since moved on to what is possibly India's most balanced bowling attack ever.
The figures speak for themselves -- 20 wins in 26 games played under Virat Kohli, which becomes 21 in 27 if you include the Dharamsala Test against Australia in 2017 played under Ajinkya Rahane as caretaker captain. That series also produced the only loss over the last five years at home for India, by 333 runs in Pune. The 20 wins have also produced lopsided margins -- India have eight innings wins, and a further 10 by a margin of 100 runs or more. Kohli, as captain, has led with the bat, scoring 10 hundreds, averaging close to 80. It's not a stretch to say that beating India in a Test at their own turf remains one of cricket's most challenging feats.
Usain Bolt at the Olympics (2008-2016)
Usain Bolt -- the world's fastest man, a record he has held for 13 years now -- is the most dominant sprinter of all time.
Here are the facts: He won the 100m and 200m across three consecutive Olympics, the only person in history to achieve this feat. Include the relays, and he has eight Olympic golds. Between 2009- 2015, he won the 100m, 200m, and 4x100m relay in every World Championships (except for a false start disqualification in 2011). His 11 World Championship golds are more than anyone in history.
In this period, he went on a run (no pun intended) where he won 17 straight 200m finals, and 14 straight 100m ones. He broke the 100m record thrice, the 200m record twice and the 4x100m relay record thrice.
And he made it all look as easy as a jog in the park.
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