On Friday 9/20 slugger Paul Goldschmidt hit his 35th homer of the year, putting him one HR ahead of Pittsburgh Pirate Alvarez. It's feasible that neither hit a bomb during the final week, and that no other hitters overtake them for the lead. Thirty-five homers. To lead the National League.
The last time a batter lead the NL with as few as 35 homers in a non-strike year was household name Tommy Holmes in 1945. If you take out the WWII years the last time an NL HR hitter led with fewer than 35 homers it was Johnny Mize in 1939. Mize would win the Triple Crown in '40, but his '39 season would be a low point for HR crown winners from then to now.