From the NFL website:
"Odell Beckham Jr. is the first player in NFL history to have a 1,000-yard season after missing his team's first three games of the season (Beckham missed first four games). Beckham's 79 receptions are the most in NFL history for a player in his first 11 career games. His 1,120 receiving yards are most through a player's first 11 games in Super Bowl era (since 1966), and his 11 receiving TD are also the most through a player's first 11 games in that time."
That's amazing (particularly the first sentence - not just first rookie but first player).