Photo Credit Carl Russo HAVERHILL — Boxing is back in Haverhill. Several weeks ago, the Haverhill Downtown Boxing Club celebrated its first Golden Gloves champion — 17-year-old Shingirayi "Shin" Murinda, a junior at Haverhill High School. Since then, an even younger fighter from the club won a coveted title. Andrew Paltinavich, 13, was crowned this year's Silver Mittens champion in his division. The Silver Mittens competition is open to boxers ages 10 to 16. It is considered

HAVERHILL — Shingirayi "Shin" Murinda was never much into sports — until he discovered boxing. When he began training at the Haverhill Downtown Boxing Club almost two years ago, he threw his heart and soul into the sport, and it showed. Murinda, 17, a junior at Haverhill High School, is the Central New England Golden Gloves Champion. He won the 114-pound novice division for fighters with fewer than 10 previous boxing matches at a tournament recently at Lowell Memorial Audi