Riley was shot in the torso around 10 p.m. near Aquatic Park, according to police and media reports. No suspect or motive has been identified.
The San Francisco Police Department did not respond Sunday to calls and emails about the incident. The San Francisco Medical Examiner’s Office confirmed Riley, of San Mateo, was the victim of the shooting.
Riley graduated from Serra in 2015 and was about to start his sophomore year as a pitcher for the San Joaquin Delta College Mustangs in Stockton. He grew up in Lowell, Massachusetts, according to his Facebook profile.
Reed Peters, coach of the Mustangs, said he first heard of Riley’s death Sunday morning when he received a text from one of his players.
“I’m just sitting at the baseball field right now in shock,” he said. “Just watching him hop over the third-base line every time he went out to jump on the mound was kind of his ritual.”
Peters described Riley as a tremendous competitor on the baseball field, a team player and someone everyone loved to be around because of his humor and outgoing nature.
“Whatever you asked him to do, he would do it, and the tougher the situation, the better he got,” he said.
Peters said he heard that Riley had a friend coming in from the East Coast and that they went to downtown San Francisco to play Pokémon Go on Saturday night.
Unfortunately, he was in the wrong place at the wrong time,” Peters said. “Sounds like a random act.”
Dean Ayoob, Serra’s athletic director, said in a statement Sunday that Riley was a kind and respectful person who loved the game of baseball.
“The Serra community is absolutely devastated by the loss of a wonderful young man who was full of life. Calvin was always smiling and he cared about helping others. His personality was bigger than life,” Ayoob said. “We will all keep Calvin’s family in our prayers during this incredibly difficult time.”
Riley also played for the Menlo Park Legends, a summer college baseball team. David Klein, the head coach and manager for the team, said he was always looking for ways to improve as a player.
“He was a pitcher but he was asking me if he could hit batting practice,” Klein said. “He’s an incredible hard worker, really knows himself and he’s going to do what it takes to get to the next level.”
Working at a youth summer camp, Riley was so good with kids that Klein invited him to be a coach for the program, a job that was going to start on Monday.
“He was really just a good guy and the type of player you would want to have on your team,” he said.
Family and friends mourned the loss of Riley on social media on Sunday.
An online fundraiser for Riley’s funeral was set up on GoFundMe by his cousin Gabriel Antonio Morales. As of Sunday night, the fundraiser had raised more than $27,600, with a goal of $30,000.
This isn’t the first time a Pokémon Go player has been the victim of a crime or faced a dangerous situation. Last week, a Pokémon Go player said he was slashed in the face by an attacker in downtown San Jose.
Multiple police departments have issued safety tips about the popular augmented reality game, asking people to be aware of their surroundings and the possibility of encountering strangers at hot spots tied to the game.