EAST BOSTON, MASS. – Like father, like son.Jorge L. Vargas Sr. was always known as a good gate rider and a strong finisher while notching many of his 3,093 career wins at Suffolk Downs. Apprentice Jorge L. Vargas Jr. just turned 20, and now he’s the one turning heads here.“Everyone is happy with the way he’s riding, and we’re getting a lot of calls from just about every trainer here,” said Vargas the elder, who hung up his tack at the end of May to take his son’s book. “He’s good leaving the gate, and he’s a good finisher.”The younger Vargas is not to be confused with his half-brother, the retired rider Jorge Fuller Vargas, who is the son of Abby Fuller, best known as the rider of National Museum of Racing and Hall of Fame member Mom’s Command. This Vargas began his career and got his first win at Suffolk Downs in 2012 after attending the jockey school in his native Puerto Rico for two years. But his most valuable lessons were learned at his father’s knee.“I always wanted to be just like my dad and be a jockey,” said Vargas Jr., who has the five-pound bug. “I learned a lot by being around him and paying attention when he was riding, and I’m still learning from him every day. When we watch tapes of my races, he gives me pointers. He’s a big help, and I love my dad.”Playing mentor is a new role for the veteran rider.“It was hard for me to stop riding,” said Vargas Sr., 56, who piloted 21,232 starters in his days dating back to 1979. “It took some getting used to being on the sidelines and watching him be the one up there. But I’m his agent now, and we’re doing this together. I get more nervous watching him in the saddle than I ever did on any of my mounts. He’s got a good career in front of him.”Through Wednesday, the younger Vargas had 34 winners from 506 career starts, with his mounts earning $739,396, and he ranks ninth in the Suffolk standings.Track record setMy Tee Time, a 5-year-old Florida-bred daughter of El Nino, bettered the track record for 5 1/2 furlongs June 23, when she traveled the distance in 1:03.45 and drew clear to prevail by 11 lengths in a $20,000 optional-claiming race under Frank Reyes. Trained by Kevin McCarty and owned by the partnership of Robert Beaudoin, Dan Hallahan, and Joseph Hallahan, My Tee Time set blistering fractions of 22.23 seconds, 45.23, and 57.18 on the way to eclipsing the old mark of 1:04.09 set by Dennisport on Sept. 17, 2007, and remained undefeated at Suffolk this season.◗ Saturday’s $25,000 Rise Jim Stakes for 3-year-olds and up, to be contested at six furlongs and the first of eight stakes for Massachusetts-breds on the schedule this season, features the rematch of a pair of multiple local stakes winners in the field of seven horses. Patricia Moseley’s homebred Victor Laszlo, the 2013 New England-bred Horse of the Year who was second in the 2013 edition of the race, is co-highweighted at 124 pounds with Adel Salim’s homebred Silk Spinner, last year’s Rise Jim winner.