Heads up: at least one of these records is a tracked record — the wins and losses Kill The Body has ingested so far, not an independently verified career total. Treat the comparison as a read on the bouts we hold, not a settled ledger.
Cosme Rivera (43-40-4) and Roberto Valenzuela Jr. (1-18 across 19 tracked bouts) are compared on record, finishing method, activity, and common opponents on Kill The Body. The two have met once. They share 1 common opponent.
Cosme Rivera vs Roberto Valenzuela Jr. — record, stats and common opponents compared
Head to Head
Roberto Valenzuela Jr. leads 1–0- Roberto Valenzuela Jr. wonRivera vs Valenzuela Jr.Jan 30, 2021 · TKO · R4
The Numbers
- 43-40-4 (edge)
- Record
- 1-18
- 51.7% (edge)
- Win %
- 5.3%
- 28 (edge)
- Wins by knockout
- 1
- 65.12%
- KO rate
- —
- 67%
- Stoppage rate (tracked wins)
- 100% (edge)
- 19
- Times stopped
- 11 (edge)
- 0
- Title reigns
- 0
- 2.7 (edge)
- Bouts per year
- 0.7
- 88
- Bouts tracked
- 19
One or both records are tracked, not career-verified.
Counted from bouts Kill The Body has ingested, not a career total.
Counted from bouts Kill The Body has ingested, not a career total.
Across each fighter's tracked career span.
Tale of the Tape
- 50
- Age
- —
- Orthodox
- Stance
- —
- Light Welterweightwelterweight
- Division
- —
- Mexico
- Nationality
- —
How They Win
Tracked bouts onlyCosme Rivera · 43 wins
KO/TKO
29
Decision
14
Other
0
Roberto Valenzuela Jr. · 1 wins
KO/TKO
1
Decision
0
Other
0
Counted from the bouts Kill The Body has ingested for each fighter (88 and 19 respectively), not from a career-complete method table.
Common Opponents
1 sharedShared opponents are matched on fighter identity, not on name — two different fighters with the same name never merge into one row.
Current Form
Cosme Rivera
LLDLL
L2 streak · last fought Jun 7, 2025
Roberto Valenzuela Jr.
LLLWL
L3 streak · last fought Sep 15, 2023
Common Questions
- Have Cosme Rivera and Roberto Valenzuela Jr. ever fought each other?
- Yes. Cosme Rivera and Roberto Valenzuela Jr. met once on January 30, 2021, and Roberto Valenzuela Jr. won by TKO in round 4.
- Who has the better record, Cosme Rivera or Roberto Valenzuela Jr.?
- Cosme Rivera is 43-40-4 and Roberto Valenzuela Jr. is 1-18 across the 19 bouts Kill The Body has tracked. Cosme Rivera has the higher win percentage. Records shown as tracked have not yet been independently verified as complete career totals.
- Who has more knockouts, Cosme Rivera or Roberto Valenzuela Jr.?
- Cosme Rivera has 28 knockout wins and Roberto Valenzuela Jr. has 1. Cosme Rivera has more.
- Do Cosme Rivera and Roberto Valenzuela Jr. have any common opponents?
- Cosme Rivera and Roberto Valenzuela Jr. share 1 common opponent: Andre Berto. Neither fighter fared better across the shared opponents overall.
- How much fight data does Kill The Body have on Cosme Rivera and Roberto Valenzuela Jr.?
- This comparison is drawn from 88 bouts tracked for Cosme Rivera and 19 bouts tracked for Roberto Valenzuela Jr.. Method and activity splits reflect those bouts only.