Messi first to win back-to-back MLS Golden Boots
The 39-year-old finished the regular season with 26 goals in 31 matches, four clear of FC Dallas's Petar Musa.
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Lionel Messi topped the MLS scoring charts for a second straight season with 26 goals.
No player had won the Golden Boot in consecutive seasons before.
Inter Miami, the defending champions, begin the playoffs against Columbus Crew.