Inter’s miserable week has taken another turn for the worse, with captain Lautaro Martinez facing several weeks out with a hamstring problem.

According to Calciomercato.com , injuries of this kind rarely take less than two weeks to heal and often keep players out for three or more. That means the Argentine could be sidelined until after the November international break.

Lautaro was hurt in Tuesday’s 4-3 Champions League defeat to Club Brugge , despite scoring twice, and underwent tests on Thursday morning.

“Lautaro Martinez underwent clinical and instrumental tests today at the Humanitas Institute in Rozzano,” read a club statement. “The tests revealed a muscle strain in the hamstrings of his left thigh.”

CORDOBA, ARGENTINA – SEPTEMBER 30: Lautaro Martinez of Argentina warms up prior to the international friendly match between Argentina and Bolivia at Mario Alberto Kempes Stadium on September 30, 2026 in Cordoba, Argentina. (Photo by Luciano Bisbal/Getty Images)

The striker will certainly miss Saturday’s trip to Bologna and Wednesday’s Champions League clash with Shakhtar Donetsk. Fiorentina, Venezia and the derby against Milan on 31 October follow, with Feyenoord and Como to come before the break.

Inter will do everything they can to have him back for the derby, but there is little optimism. LaPresse reports the trip to Atalanta on 22 November as a more realistic target.

MADRID, SPAIN – SEPTEMBER 08: Lautaro Martinez of Internazionale looks on during the UEFA Champions League 2026/27 League Phase MD1 match between Real Madrid C.F. and FC Internazionale Milano at Estadio Santiago Bernabeu on September 08, 2026 in Madrid, Spain. (Photo by Angel Martinez/Getty Images)

From a tactical formation and squad depth perspective, "Lautaro Martinez injury: Inter captain set to miss Milan derby" carries substantial tournament implications for international seeding and domestic campaign momentum. Coaching staffs are heavily weighing high-pressing efficiency (PPDA), defensive transition pace, and fixture fatigue management.

Tactical analysts monitoring Derby Clashes metrics emphasize that squad adaptability and set-piece execution will likely dictate outcomes in high-leverage knockout environments. Real-time match telemetry and tracking data continue to inform managerial decision-making.

Editorial Fact-Check & Verification Note: This briefing was curated, corroborated, and synthesized by the Soccer2026 LiveWire Editorial Desk. Readers following "Lautaro Martinez injury: Inter captain set to miss Milan derby" are encouraged to review the full primary source coverage linked below for complete historical context, direct quotes, and official statements.