How Do You Get Back to Throwing After Tommy John Surgery?

Through a written, step-by-step interval throwing program that takes roughly six months from the first catch to competition. It is not a matter of being cleared to throw and then building up however feels right. Every athlete I operate on gets a specific progression with defined distances, throw counts, and criteria that have to be met before advancing. Handing an athlete a date instead of a protocol is how reconstructions fail.

The program has two phases. Phase I is long toss on flat ground. Phase II is the mound. Each has its own rules, and the transition between them is gated.

The rules that govern both phases

A few principles apply throughout, and they matter more than any individual step:

• Two clean sessions clear a step. You do not advance because a week has passed. You advance because you completed a step twice without symptoms. Progression is earned step by step, not granted by the calendar.
• One step per session. Never two. Feeling good is not a reason to do tomorrow's work today.
• Three fixed days a week. Monday, Wednesday, Friday, with flexibility and recovery on the days between. I use fixed days rather than strict alternate-day scheduling because it preserves a full recovery cycle, protects weekends, and substantially improves whether athletes actually follow it.
• Crow-hop every throw. Hop, skip, throw. This uses the legs and trunk to generate the throw rather than the arm alone.
• Effort is set by distance, not by intent. The ball carries just far enough to reach the target. You are not trying to throw hard at 60 feet.
• If you fail a step, drop back. Return to the last step you completed without symptoms, clear it twice again, then move forward. Never skip ahead to make up lost time.

Phase I — long toss, capped at 120 feet

Phase I is twelve steps, taking roughly eight weeks without setbacks. It starts at 45 feet and works through 60, 75, 90 and 120 feet, finishing with flat-ground throwing using pitching mechanics.

Why I stop at 120 feet

This is where my program differs from most, and it is deliberate. Valgus torque at the medial elbow rises with throwing distance. Beyond roughly 120 feet, an athlete has to flatten the trajectory and alter the arm slot to reach the target, and that position loads the reconstruction more than pitching off a mound does. Distance past that point adds stress to the graft without adding anything that carries over to pitching.

Many conventional programs go to 150 and 180 feet. I do not, and I make up the difference by increasing throw volume at 90 and 120 feet instead. The athlete accumulates the same conditioning and the same confidence, in a lower-torque arm position.

The cap carries into Phase II as well. Long toss there is warm-up and maintenance, not a distance progression.

What the sessions look like

Every session starts with a full warm-up — jog to a light sweat, stretching from the legs upward, capsular and L-bar work, a set of rotator cuff repetitions — then warm-up throws at a comfortable 30 to 45 feet before the working sets. Rest between sets is three to five minutes.

Volumes build from 60 throws in the first step to 135 in the highest-volume step, all at or below 120 feet. Weight training happens on throwing days only, after throwing, with high repetitions, low weight and emphasis on the posterior cuff.

Clearing into Phase II

Before touching a mound, an athlete has to complete the final flat-ground step twice symptom-free, tolerate 120 feet at full volume without pain, tolerate flat-ground pitching mechanics at full volume, have no medial elbow tenderness and a non-painful valgus stress exam, maintain full symmetric elbow motion, and have mechanics reviewed by a pitching coach. Then I clear them.

Phase II — the mound

Phase II is seventeen steps across six stages. Two mound sessions per week, never on consecutive days, with a long-toss maintenance day in between.

Why only two mound days a week

Valgus torque peaks in late cocking off the mound and substantially exceeds anything generated during flat-ground long toss. Three mound sessions a week is more high-stress exposure than a reconstructed elbow should absorb during a return progression. The Wednesday long-toss day preserves throwing volume and arm conditioning without adding a third loading event.

Unlike Phase I, mound volumes are conventional and deliberately not increased. The higher volumes in Phase I existed to compensate for eliminating the 150 and 180 foot distances. That logic does not transfer to the mound, where an added pitch is added graft load with no offsetting benefit.

The six stages

The structure separates volume from intensity on purpose. Pitch count is built entirely at 50 percent before any 75 percent work begins, so the two stressors are never escalated in the same session. Stage Five is the first time full effort appears, and it appears at low volume — maximum effort and high pitch count are never combined for the first time in the same outing.

Breaking balls come last, and for a reason

No breaking pitches at all during the first three stages, under any circumstances. The pronation-heavy release of a breaking ball loads the medial elbow, and this is the single highest-risk transition in the program. When they do enter, they enter at 50 percent effort, after batting practice is already established.

Effort is measured, not reported

Every mound session uses a radar gun, and the percentages are of the athlete's established measured maximum — not what the throw feels like.

This matters because perceived effort does not reliably match measured effort in throwers. Athletes consistently throw harder than they believe they are. An athlete who says they are at 50 percent is frequently at 70. Self-report is an unreliable governor during exactly the phase when intensity control matters most, so I use a radar gun or an experienced observer instead.

Weekly mound pitch ceilings also apply, counting all mound and batting practice pitches but excluding long-toss warm-up: roughly 150 to 180 per week for high school, 180 to 210 for college, and 210 to 240 for professionals. I may specify lower.

When to stop and when to call

• Expected and acceptable: diffuse muscle and tendon soreness, or a dull generalized ache, during and after sessions. This is not a reason to stop.
• Stop the session: sharp pain, or pain localized to the joint, or any medial elbow pain. Do not finish the step.
• Cancel the next mound session: soreness persisting more than 24 hours after an outing, or symptoms during the Wednesday long toss.
• Call the office immediately: medial elbow pain reproduced by valgus stress, new numbness or tinglingin the ring and small fingers, a pop or tearing sensation, or an unexplained drop in velocity.

On that last point: velocity is a warning sign, not a goal. An athlete chasing radar readings is a reason to pause the progression and have a conversation, not a reason to advance them.

Why this takes as long as it does

The most common question I get at the start of the throwing program is why it cannot be compressed, particularly from an athlete who feels strong and has been cleared to throw.

The answer is that the graft is still becoming a ligament. A tendon graft has to biologically remodel into ligament tissue — ligamentization — and it is mechanically weakest at around six months, which is frequently the exact point at which an athlete feels best and most capable. Feeling good and being structurally ready are not the same thing, and the gap between them is where re-injuries happen.

Athletes in this population reliably try to compress the program. Increasing intensity or distance ahead of schedule raises re-injury risk and lengthens total recovery. It does not save time.

Throwers who are not pitchers

Position players follow the same Phase I long-toss progression but do not need the mound phase, which shortens the overall timeline. Javelin throwersuse an entirely different implement progression, because the approach, the implement and the release are not comparable to a baseball throw. Catchers, who throw from a crouch under time pressure, need position-specific work before returning to game situations.

The bottom line

Returning to throwing after Tommy John surgery is a written program, not a clearance date. Phase I is long toss capped at 120 feet, twelve steps, about eight weeks. Phase II is the mound, seventeen steps across six stages, with two mound days a week and breaking balls held until late. Steps are cleared by completing them twice without symptoms, effort is verified by radar rather than by feel, and the whole progression takes roughly six months on top of the four months of rehabilitation that precede it. That is how you get a twelve-month timeline, and why compressing it is the most reliable way to end up back in the operating room.

References — publish at the bottom of the page, smaller type

1. Mirzayan R. Interval Throwing Program Phase I: Long Toss Progression Following UCL Reconstruction — Pitchers. DOCS Health.
2. Mirzayan R. Interval Throwing Program Phase II: Mound Progression Following UCL Reconstruction — Pitchers. DOCS Health.
3. Fleisig GS, Andrews JR, Dillman CJ, Escamilla RF. Kinetics of baseball pitching with implications about injury mechanisms. Am J Sports Med. 1995;23(2):233-239.
4. Reinold MM, Wilk KE, Reed J, Crenshaw K, Andrews JR. Interval sport programs: guidelines for baseball, tennis, and golf. J Orthop Sports Phys Ther. 2002;32(6):293-298.