Masahiko "Fighting" Harada, former World flyweight and World bantamweight champion had only a ten year career. But he did have 62 fights in that time span...
Richie Sandoval (RIP) had a career cut short by injuries sustained vs. Gaby Canizales after cutting a lot of weight in a short time span. His predecessor, Jeff Chandler, didn't have a particularly lengthy career either - he retired suddenly following his disastrous outing vs. Sandoval. McGuigan's career never recovered from his disastrous American debut (& the managerial disputes that followed) & he retired for good after only a few more fights.
There was a fellow by the name of Kwang Sun Kim who fought both Chiquita Gonzalez & Michael Carbajal for title belts back in the early 90's. He was ahead on all three cards vs. Gonzalez before being KO'd in the 12th round. He was stopped by Carbajal a year later and called it a career. His career lasted only 32 months, and his record ended up 6-2 (4 KOs).
Paul Hodkinson’s pro career was just eight years with 26 fights. Troy Dorsey was a pro for 13 years but only had 30 bouts. He was also an active kickboxing champ in at least the earlier part of his boxing career. In that span, Dorsey faced 12 men who held world title belts and two others who challenged for world titles.
Fernando Vargas only boxed 10 years and I believe barely broke 30 fights. I think David Reid had the shortest career of anyone who ever won a world title though, only 4 years and 18? fights I believe
Ike Ibeabuchi competed profesionally for little over four years and compiled a record of 20-0 with noted victories over David Tua and Chris Byrd.
Eddie ‘Motorboat’ Logan retired with a record of 8-7 according to boxrec, but he packed a lot into those 15 fights. Fought world champs Alfonso Zamora, Albert Davila and Leo Randolph. Also fought top contenders Superfly Sandoval (twice), Oscar Muniz (twice) and Benny Rodriguez. Retired after his greatest win (Zamora), but have no idea what happened to him pulling the plug.
Samart Payakaroon was a young phenom who won the jr FW title in just his 12th pro fight by KOing veteran 2-division champ Lupe Pintor. After successfully defending vs. ex-champ Juan Meza, he was bombed out in 4 by fellow young phenom Fenech. He took a several-year hiatus from the sport, then returned for a title shot @a higher weight, but by that time he was already a shell of himself.