Compare

Athlete head-to-head

Compare career records, current form and shared race results. Use athlete slugs, names, or profile IDs.

Battle read
Stored head-to-head is tied

Last 4 shared: Niek Heldoorn 2, William Mennesson 2. This only counts races where both athletes have stored results.

Win share
Niek Heldoorn
50%
Win share
William Mennesson
50%
Latest shared race
2026 Ironman 70.3 Valencia
4/18/2026 · edge Niek Heldoorn
6
Niek Heldoorn
35
William Mennesson
Head-to-head

Niek Heldoorn vs William Mennesson

ProTriStats

Head-to-head tied: 2-2 across 4 shared starts

Last 4 shared: Niek Heldoorn 2, William Mennesson 2

Latest shared race: 2026 Ironman 70.3 Valencia - edge Niek Heldoorn

Career starts: Niek Heldoorn 18, William Mennesson 45

Career wins: Niek Heldoorn 3, William Mennesson 3

18
Starts
45
3
Wins
3
8
Podiums
6
12
Top 10s
21
#1
Best
#1
#8.4
Avg pos
#13.7
1103
Points
2108
2
Niek Heldoorn head-to-head wins
4
Shared race starts
2
William Mennesson head-to-head wins

Shared races

Only races where both athletes have a stored result are shown.