Chamuekpet Hapalang
Photo: Kevin Von Duuglas-Ittu · CC BY-SA 4.0 · Wikimedia Commons
Muay ThaiBoxing

Chamuekpet Hapalang

“Mr. Computer Knee”
Born Vichean Bootdee

Mr. Computer Knee, champion in seven weight classes

Tale of the tape
Born
August 10, 1962, Si Racha, Chonburi, Thailand
Nationality
Thailand
Height
168 cm (5′6″)
Stance
Southpaw
Style
Knee fighter turned counter-fighter
Weight
Pinweight, Mini Flyweight, Light Flyweight, Flyweight, Bantamweight, Super Bantamweight, Featherweight
Active
c. 1974–2000
Status
Retired · age 64

The record

200
Wins
48
Losses
2
Draws
15
Wins by KO/TKO
Won by KO/TKO 15Other wins 185Losses 48Draws / no contests 2250 fights, 80% won, 8% of wins by finish

Muay Thai per Wikipedia; era records are approximate. Pro boxing 10-1 (6 KO).

The story

Chamuekpet Hapalang, born Vichean Bootdee in Chonburi, won nine stadium titles, four at Lumpinee and five at Rajadamnern, across seven weight classes between 1980 and 1994. Early on he was a southpaw pressure fighter who threw precise straight knees, earning the nickname Mr. Computer Knee, and his teep was rated among the best in Thailand. He beat Samart Payakaroon for the Lumpinee 102-pound belt in 1980 and was the 1985 Sports Writers Fighter of the Year. In the 1990s, with Samart as his trainer, he switched to a patient counter-fighting style that stretched his career. He also won the PABA featherweight boxing title. In 2000 he beat Kensaku Maeda despite breaking his arm in the fight, then retired and settled in Tokyo as a coach.

Signature weapons

Tap a technique with an arrow to learn how it works.

Titles
  • Lumpinee Stadium champion at 102, 108, 112 and 118 lb (1980–1983)
  • Rajadamnern Stadium champion at 105, 122 and 126 lb (five reigns, 1980–1994)
  • PABA featherweight boxing champion (1997–1998, 4 defenses)
Honours
  • Sports Writers Association of Thailand Fighter of the Year (1985)
  • Sports Writers Association of Thailand Fight of the Year (1994)

Defining fights

  1. 1980WIN
    vs Samart Payakaroon (decision, won Lumpinee 102 lb title)
  2. 1982WIN
    vs Kongtoranee Payakaroon (decision, won Lumpinee 112 lb title)
  3. 1983WIN
    vs Sornsilp Sitnoenpayom (decision, won Lumpinee 118 lb title)
  4. 1994WIN
    vs Chaidet Kiatchansing (KO 3, won Rajadamnern 126 lb title, Fight of the Year)
  5. 2000WIN
    vs Kensaku Maeda (unanimous decision, won despite a broken arm)
Steal this

Use the straight knee as a range weapon, not just a clinch strike: step in behind a teep or long guard and drive the rear knee straight up the middle before the opponent can tie you up.

More Muay Thai legends

Facts checked September 2026 against en.wikipedia.org, 8limbsus.com, evolve-mma.com, muaythaicitizen.com and en.wikipedia.org. Photo: Kevin Von Duuglas-Ittu, CC BY-SA 4.0, via Wikimedia Commons, shown in black and white with a halftone effect. The Hall of Fame is editorial; it doesn't imply Chamuekpet Hapalang endorses Satori Fight Club.