McCartney Kessler mounted a stunning comeback at the Miami Open on 19 March 2026, defeating Magdalena Frech 2-6, 6-4, 6-2 after dropping the opening set. Her win sets up a second-round clash with eighth seed Mirra Andreeva — and her recovery from a set down highlights one of tennis's most overlooked medical stories: arm and shoulder injury prevention.
Kessler's Comeback and What It Demands Physically
The 26-year-old American, ranked 51st in the world, played for one hour and 46 minutes in Miami's humid conditions. Coming back from a first-set loss requires an athlete to recalibrate physically and mentally mid-match — and that recalibration puts specific demands on the upper limb.
Kessler's game is built around her serve and groundstroke power from the baseline. The physical load of 162 service motions across three sets (an estimate based on her average service games per match) means the rotator cuff, forearm flexors, and wrist extensors absorb significant stress. In professional tennis, this cumulative load over a tournament is precisely where injuries develop.
The 2026 Miami Open has already seen 13 to 20 WTA player withdrawals, and rain delays on 19 March forced a compressed schedule for 20 March. Back-to-back matches with reduced recovery time is one of the principal triggers for acute upper limb injuries in professional tennis.
The Five Most Common Tennis Arm Injuries
Sports medicine doctors and physiotherapists who work with club and recreational players see a similar pattern to the professionals, scaled down in intensity. Understanding the mechanisms helps with both prevention and early management.
Lateral epicondylitis (tennis elbow). The most prevalent condition, affecting 40-50% of players at some point in their tennis career. Caused by repetitive wrist extension during topspin groundstrokes and serves, it produces pain on the outer side of the elbow. Treatment in the early stage involves relative rest, ice, and eccentric strengthening exercises; chronic cases may require injection therapy or physiotherapy.
Rotator cuff tendinopathy. The serve loads the rotator cuff through extreme ranges of external rotation on the wind-up, followed by rapid internal rotation at ball contact. Recreational players who serve with poor technique or without adequate warm-up are particularly vulnerable. Pain typically appears at the front of the shoulder, aggravated by overhead movement.
Wrist extensor overuse. Backhands hit late — particularly one-handed backhands where the wrist absorbs the contact force — stress the extensor tendons of the wrist. This is distinct from tennis elbow but often co-exists.
SLAP tears (labral injuries). More commonly seen in professionals due to high-velocity serving, SLAP tears involve the labrum of the shoulder joint. They produce a catching, locking sensation in the shoulder and require MRI for definitive diagnosis.
Ulnar collateral ligament (UCL) stress. The medial elbow is stressed during serves that emphasise pronation and snap. Often underdiagnosed in recreational players who attribute inner elbow pain to overuse.
When to See a Sports Medicine Specialist
Sports medicine doctors who work with tennis players at all levels use a simple rule: a symptom that persists beyond 72 hours after play, or that returns every time you play, is a signal for clinical assessment. Waiting for pain to become severe before seeking help is the most common mistake.
An early consultation allows the doctor to distinguish between tendinopathy (manageable with conservative treatment), structural damage (which may need imaging and targeted intervention), and technique-related overload (which requires modification rather than just rest).
For recreational players, a biomechanical assessment — which a sports medicine physician can coordinate with a physiotherapist — can identify whether your grip size, racket string tension, or swing mechanics are contributing to upper limb stress. These are correctable factors that professionals like Kessler have optimised with professional coaching; club players rarely receive the same guidance.
Recovery Windows and Tournament Timing
One reason professional tournaments produce injury clusters is the compressed schedule. Kessler faces Andreeva on 20 March after a match the previous day. Sports medicine protocols recommend a minimum of 18-24 hours between competitive matches for upper limb recovery; compressing this window increases tissue damage accumulation.
Recreational players face an analogous issue: weekend tournaments where players compete in three or four matches over two days. Club players who experience elbow or shoulder discomfort on day one and continue to play on day two through pain are replicating exactly the injury risk pattern observed at professional level, without the benefit of medical support on site.
Getting Expert Help
Whether you play once a week or compete in local leagues, the physical demands on your arm during a tennis match are genuine. Upper limb conditions that are caught early are straightforward to treat. Those that become chronic — particularly lateral epicondylitis and rotator cuff tendinopathy — can sideline a player for months and, in some cases, require surgery.
A sports medicine doctor or specialist physiotherapist can assess your current upper limb health, identify early warning signs, and build a conditioning programme that keeps you playing through the season. Kessler's Miami Open comeback demonstrates what a well-conditioned arm can do under pressure. The science behind that performance is accessible to every player.
Medical disclaimer: This article is for informational purposes only. Always consult a qualified sports medicine professional for advice on injuries or training.
