Zlatan Ibrahimovic trains in Carnago, near Milan, Italy, Saturday, Jan. 3, 2020. The 38-year-old striker signed a deal with AC Milan until the end of the season with an option to extend for another year. (Spada/LaPresse via AP)

9’s are back in vogue in Serie A. The last round of matches was a case in point, with a hat trick from Ronaldo and multiple goals from Lukaku, Immobile and Belotti. Meanwhile, Zlatan Ibrahimovic is only one game into his Serie A return with AC Milan. 9’s, his vertical moves have been in perfect synch with crossing specialists Sergej Milinković-Savić and Luis Alberto. Dubbed “LuLa,” the duo has scored 23 goals in Serie A this season — seven more than all of AC Milan.