Apr 13 2026
Monday

Korakuen Hall, Tokyo, Japan

12 rounds contest
@ Jr Flyweight
VS
39-1-0

Estimated Ringwalk:

2026-04-13T11:00:00Z ()

broadcast start time:

US - N/A / UK - N/A

27-0-0

Contest odds

Simsri 9/4 (+230)
Draw -
Mendoza 1/3 (-300)

Chance of winning

29.04% 70.96%
Bovada logo

Bet on Simsri vs Mendoza
& Score A $750 Welcome Bonus!

US Players Welcome | BitCoin Support | Fast, Free Pay Outs

The tape

25
Age
26
5' 3" / 161 cm
Height
N/A
64.6" / 164 cm
Reach
N/A
Orthodox (R)
Stance
Orthodox (R)

Full record

SD 12SD 12
Form
KO 3KO 3
39
Wins
27
34
By KO
23
87
KO%
85
1
Losses
0
1
Stopped
0
0
Draws
0
2018
Debut
2018
143
Pro rounds
113

Current rankings @ Jr Flyweight

3
The Ring
10
-
WBA
-
-
WBC
-
-
WBO
-
-
IBF
1

Simsri vs Mendoza betting preview

Bookmakers made Sergio Mendoza a strong favorite against Thanongsak Simsri when they square off in their contest on Monday 13th April 2026 at Korakuen Hall, Tokyo, Japan.

He is currently 1/3 (-300) to win the contest outright, while you can get 9/4 (+230) on Thanongsak Simsri if you fancy the upset.

That means that oddsmakers think there is 71% chance of Mendoza winning while giving Simsri a 29% chance.

Mendoza opened as the favorite at 1/3 (-300).

Simsri opened at 9/4 (+230).

The fight is scheduled for 12 rounds in the Jr Flyweight division, which means both fighters will have to make the weight limit of 108 pounds (7.56 stones or 49.09 kg) on the day of the weigh-in.

This contest is for the IBF jr flyweight championship of the world.

Simsri vs Mendoza Head To Head

Thanongsak Simsri steps into the ring with a record of 39 wins, 1 loss, and 0 draws, 34 of those wins coming by way of knockout.

Sergio Mendoza will make his way to the ring with an unblemished record of 27 wins and 0 draws, with 23 of those by knockout.

The stats suggest Simsri has a slight advantage in power over Mendoza, with a 87% knockout percentage compared to Mendoza's 85%.

Thanongsak Simsri is the younger man by 1 year, at 25 years old.

Both Thanongsak Simsri and Sergio Mendoza fight out of an orthodox stance.

Simsri is the more experienced professional fighter, having had 13 more fights, and made his debut in 2018, 6 months earlier than Mendoza, whose first professional fight was in 2018. He has fought 30 more professional rounds, totaling 143 compared to Mendoza's 113.

Thanongsak Simsri goes into the fight ranked number 3 by The Ring at jr flyweight.

Sergio Mendoza is currently ranked number 1 by the IBF, and 10 by The Ring in the 108lb division.

Who's been more active?

If you think ring rust and activity is a big factor in this fight, Thanongsak Simsri has been fighting more than Sergio Mendoza.

Thanongsak Simsri last fought 9 months and 25 days ago, while Sergio Mendoza's last outing was 4 months and 22 days ago.

Simsri's last 2 fights have come over a period of 1 year, 3 months and 29 days, which means he has been fighting approximately every 7 months and 30 days. In those fights, he fought a total of 24 rounds, meaning that they have lasted 12 rounds on average.

Mendoza's last 2 fights have come over a period of 1 year and 7 months, meaning he has been fighting on average every 9 months and 15 days. In those fights, he fought a total of 6 rounds, meaning that they have lasted 3 rounds on average.

What’s the Latest Time I Can Bet on Simsri vs Mendoza Pre Fight?

The fighters are expected to ringwalk at around 11:00 AM UTC at Korakuen Hall, Tokyo, Japan, which is 7:00 AM EST or 4:00 AM PST on the West Coast of America, or 12:00 PM BST in the UK.

Simsri vs Mendoza Odds History

Simsri vs Mendoza sign up offers

Bovada logo

Bet on Simsri vs Mendoza
& Score A $750 Welcome Bonus!

US Players Welcome | BitCoin Support | Fast, Free Pay Outs

Bet Now

All Simsri vs Mendoza Betting Markets

Winner

Join Box.Live, it’s free!

Sign up