Compare
Athlete head-to-head
Compare career records, current form and shared race results. Use athlete slugs, names, or profile IDs.
Battle read
Ari Klau leads the stored head-to-head
Last 5 shared: Matt Mc Williams 2, Ari Klau 3. This only counts races where both athletes have stored results.
Win share
Matt Mc Williams
33%
Win share
Ari Klau
67%
Latest shared race
2026 Ironman 70.3 Chattanooga
5/16/2026 · edge Ari Klau
19
Matt Mc Williams
2
Ari Klau
Head-to-head
Matt Mc Williams vs Ari Klau
Ari Klau leads: 2-4 across 6 shared starts
Last 5 shared: Matt Mc Williams 2, Ari Klau 3
Latest shared race: 2026 Ironman 70.3 Chattanooga - edge Ari Klau
Career starts: Matt Mc Williams 14, Ari Klau 22
Career wins: Matt Mc Williams 0, Ari Klau 0
14
Starts
22
0
Wins
0
0
Podiums
2
5
Top 10s
12
#4
Best
#2
#11.6
Avg pos
#11.5
557
Points
1067
2
Matt Mc Williams head-to-head wins
6
Shared race starts
4
Ari Klau head-to-head wins
Shared races
Only races where both athletes have a stored result are shown.
2026 Ironman 70.3 Chattanooga
5/16/2026
19
Matt Mc Williams
3:59:04
2
Ari Klau
3:45:47
2026 Ironman 70.3 Dallas
3/14/2026
15
Matt Mc Williams
3:27:23
DNF
Ari Klau
DNF
2025 Ironman Arizona
11/15/2025
12
Matt Mc Williams
8:05:17
27
Ari Klau
8:32:08
2025 Ironman 70.3 Chattanooga
5/17/2025
DNF
Matt Mc Williams
DNF
5
Ari Klau
1:12:56
2024 Ironman 70.3 Maine
7/27/2024
13
Matt Mc Williams
3:52:46
5
Ari Klau
3:46:11
2023 Ironman 70.3 Augusta
9/23/2023
6
Matt Mc Williams
3:48:58
5
Ari Klau
3:48:27
| Race | Matt Mc Williams | Ari Klau | Edge |
|---|---|---|---|
| 2026 Ironman 70.3 Chattanooga 5/16/2026 | 19 3:59:04 | 2 3:45:47 | B |
| 2026 Ironman 70.3 Dallas 3/14/2026 | 15 3:27:23 | DNF DNF | A |
| 2025 Ironman Arizona 11/15/2025 | 12 8:05:17 | 27 8:32:08 | A |
| 2025 Ironman 70.3 Chattanooga 5/17/2025 | DNF DNF | 5 1:12:56 | B |
| 2024 Ironman 70.3 Maine 7/27/2024 | 13 3:52:46 | 5 3:46:11 | B |
| 2023 Ironman 70.3 Augusta 9/23/2023 | 6 3:48:58 | 5 3:48:27 | B |