Cru Sullivan is not letting a hairline fracture stop him from resuming his busy golf schedule.

The soon-to-be Ripon High junior was on an absolute heater until the injury to his left middle finger threatened to derail the rest of his summer plans.

On Monday, he was 2-under heading into the 11th hole at Ruby Hill during a U.S. Amateur Final Qualifying Tournament. That was when he chunked a shot, jamming the finger that he had just hurt four days prior while dropping from a rope swing at a lake.

The aggravation stifled his chances to make the cut for the 126th USGA U.S. Amateur Championship, which takes place in Pennsylvania next month.

Sullivan triple bogeyed the 11th and 12th holes, finishing 8-over 80 — 12 strokes away from qualifying.

The score was uncharacteristically high, compared to his scorching run going into the tournament. Though a little bummed about the outcome, Sullivan still had reason to feel proud. He’s also relieved after fearing that he had broken the finger.

“It was more of just, ‘Let’s get it to the hole and get through the round — try and get through 18 holes and be done with it,” Sullivan said. “I feel pretty good. People were asking me if I wanted to keep going, but I was so determined to finish. I don’t like to quit no matter what, so it felt really nice to just get it done. I did not quit no matter the circumstances. It’s good to know that about myself.”

He is determined not to let it define his entire summer, which had otherwise help put him on the radar as an NCAA Division I prospect. It started with an historic performance at the Sacramento City Men’s Amateur Championship, just two weeks after his final tournament in the high school season.

Sullivan may be missing out on the U.S. Amateur, but he still qualified for the USGA U.S. Junior Amateur and Junior PGA Championship and plans to compete in both in the coming weeks. It will be his first time playing in either tournament, and he’ll do so with nine good fingers.

“I’ll be taking a break on it and not trying to hurt the finger any more before the big tournaments,” Sullivan said. “I can still hit putts and work on short-game stuff to keep my game on point. I shouldn’t lose anything on my long game when I get to practicing for the tournaments. I think my two days in the qualifying rounds, I’ll be focusing on the shots, but we’ll for sure be monitoring the finger at all times.”

In the spring, Sullivan earned Most Outstanding Player in the Trans Valley League after leading Ripon High to a fifth straight league championship. He was co-medalist in the Sac-Joaquin Section Division V Tournament and a top-10 finisher in the SJS Masters Tournament, ending up one stroke shy of joining a playoff for a NorCal berth with a 3-under 69.

Sullivan’s strong play carried over into the junior and amateur circuits.

On June 6-7, he debuted in the 105th Sacramento City Men’s Amateur at Haggin Oaks’ Alister MacKenzie Golf Course, facing off against 107 golfers from all over Northern California.

Sullivan became the tourney’s youngest-ever champion at 16 years old. He opened with a 69 and capped it off with a 68 for a 7-under-par 137, edging out four runners-up that finished 6-under.

And Sullivan did it in dramatic fashion.

Down two strokes going into hole 16, he clutched up with a birdie-par-birdie finish.

“I played my game, played to what my strengths were, and everything was flowing together,” Sullivan said. “After the round, when it was acknowledged I was the youngest player to ever win it, I didn’t know at the time, but hearing that was pretty cool. I had never really done anything like that before.

“I just thought it was really cool to have my name on that trophy in general, but I’ll always be remembered in some way.”

Sullivan’s showed his maturity as a player during the tournament, but soon after came a reminder that he is still a kid.

After the post-tournament ceremony and some picture taking, Sullivan and another teenager who competed in the event were eager to get on The MacKenzie Putting Course.

“They said, ‘Hey, let’s all go do the putt-putt,” said Danny Sullivan, Cru’s father. “That’s how young they still are. You don’t realize it when they’re playing this adult game, but they’re still so young, and they still want to do the fun things.”

The fun was just beginning for young Sullivan.

He advanced to the 115th California State Amateur, placing first with a 5-under 67 in a qualifying tournament at Riverside Golf Course in Fresno.

The California Amateur took place June 22-27 at Hacienda Country Club in La Habra. The stacked field consisted of many of the state’s top amateurs and NCAA Division I players.

Sullivan finished in a tie for 10th place out 156 after two days of stroke play, firing a 1-over 141. That was good enough to advance him to match play, and he was the youngest to move on. He knocked off two NCAA Division I opponents to make the quarterfinals before bowing out to Pacific transfer Will Tanaka, 3 and 2.

His busy June included qualifiers for the USGA Junior Amateur Championship and PGA Junior Amateur Championships.

Sullivan won the USGA Junior Amateur qualifier held at The Reserve at Spanos in Stockton, where the SJS Masters Tournament takes place. He carded a 4-under 68 to top the field of 80. The USGA Junior Amateur is on July 20-25 at Saucon Valley Country Club in Bethlehem, Pennsylvania.

Just two days after qualifying for the USGA tournament, Sullivan played in the PGA Junior Section Championship at Poppy Ridge Golf Club in Livermore, finishing as runner-up with a two-day score of 6-under 138. The Junior PGA is set for July 28-31 at Fields Ranch in Frisco, Texas.

The following week, Sullivan was co-medalist in the second stage of U.S. Amateur qualifying, shooting 1-under 71 at San Juan Oaks in Hollister.

“I’m used to playing all kinds of tournaments in the summer, but I’ve definitely been playing in more high-profile tournaments this summer,” Sullivan said.

He has even had to squeeze in video conferences with D-I college coaches. That process began in the middle of June, and Sullivan is growing more comfortable with it. About 25 coaches have reached out, so far.

“It was very intimidating, at first,” he said. “There’s a lot going on, and I like to research these universities before going into a meeting. It has kind of mellowed out, and I’m starting to like it a lot more. A few of the college coaches remember me from camps when I was younger, and it was good being able to talk to them personally.”

He may even run into some of them at the USGA and PGA Junior Amateurs, where 200-plus college coaches are expected to attend.

“It’s going to be a different kind of competition I’ve ever faced,” Sullivan said. “The experience I get to have with how the associations run the tournaments will be valuable. I’m sure they’re going to make it like a professional or high-end event, which will be very nice.”

The summer tour doesn’t end there for Sullivan, as he plans to enter American Junior Golf Association tournaments next month.