June 14, 2013
Welterweight Bout
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Predictions and betting recommendations are only available for fights after July 10, 2025
| Metric | Kenny Robertson | Sean Pierson |
|---|---|---|
| Total UFC Fights | 4 | 6 |
| Experience Gap | -2 | 2 |
| Experience ELO | 967 | 1 124 |
| ELO Change | -22 | +22 |
Sean Pierson's 2-fight experience advantage (6 vs 4 fights) held true, but the algorithm limited the bonus to prevent over-rewarding Sean Pierson for the expected result. Had Kenny Robertson pulled off the upset, his experience disadvantage would have delivered a modest upset bonus.
| Metric | Kenny Robertson | Sean Pierson |
|---|---|---|
| Title Fight ? | No | No |
| Title Fight ELO | 969 | 1 050 |
| ELO Change | -18 | +18 |
This was not a title fight, so both fighters received standard ELO adjustments. However, since ELO is a relative system, victories over former champions can have an indirect impact, and Title Fight ELO can differ from Basic ELO.
| Metric | Kenny Robertson | Sean Pierson |
|---|---|---|
| Fight Outcome | Decision - Majority | Decision - Majority |
| Last Round | 3 | 3 |
| Time of Finish | 5:00 | 5:00 |
| Win Type ELO | 1 021 | 1 109 |
| ELO Change | -14 | +14 |
The Decision - Majority showed mixed judging, with Sean Pierson earning reduced bonuses for the unclear victory margin.
| Metric | Kenny Robertson | Sean Pierson |
|---|---|---|
| Significant Strikes Landed | 65 | 36 |
| Significant Strikes Attempted | 119 | 92 |
| Total Strikes Landed | 139 | 58 |
| Knockdowns Scored | 0 | 0 |
| Striking ELO | 1 021 | 1 054 |
| ELO Change | -22 | +22 |
Kenny Robertson controlled the striking through overwhelming volume (139 vs 58 total strikes), significant strike advantage (65 vs 36), superior accuracy (54.6% vs 39.1%). However, since Kenny Robertson lost the overall fight, his striking superiority couldn't be converted into ELO bonuses. Sean Pierson's positive striking ELO reflects the overall victory rather than striking dominance.
| Metric | Kenny Robertson | Sean Pierson |
|---|---|---|
| Takedowns Landed | 1 | 0 |
| Takedowns Attempted | 6 | 1 |
| Ground Control Time | 6:41 | 1:31 |
| Ground Strikes Landed | 10 | 4 |
| Ground ELO | 1 052 | 1 110 |
| ELO Change | -20 | +20 |
Sean Pierson did not secure a significant ground advantage against Kenny Robertson on the ground with 0 takedowns, 1:31 of control time, 4 ground strikes, with almost no grappling bonus.
| Metric | Kenny Robertson | Sean Pierson |
|---|---|---|
| Days Since Last Fight | 112 | 266 |
| Activity ELO | 985 | 1 104 |
| ELO Change | -16 | +20 |
Sean Pierson demonstrated standard activity with 266 days since his last fight, earning a small activity bonus for reasonable scheduling. As the winner, Sean Pierson capitalized on this activity level, while Kenny Robertson's 112-day layoff didn't factor into the scoring since only winners receive activity bonuses.
| Metric | Kenny Robertson | Sean Pierson |
|---|---|---|
| Win Streak | 0 | 3 |
| Win Streak ELO | 973 | 1 065 |
| ELO Change | -18 | +23 |
Sean Pierson extended his 3-fight win streak, earning a momentum bonus. Kenny Robertson is back at 0 with this loss.
| Metric | Kenny Robertson | Sean Pierson |
|---|---|---|
| Weight Class | Welterweight | Welterweight |
| Double Championship Fight | No | No |
| Basic/Category ELO | 969 | 1 050 |
| ELO Change | -18 | +18 |
This category provides the foundation ELO scoring without bonuses, except for exceptional multiple division champions.

