Anquan Boldin has the most catches by a rookie, with 101 receptions in 2003.

most rec by a rookie all-time
2003Boldin2016Thomas2018Barkley2014Beckham2008Royal1996Glenn2020Jefferson2006Bush2014Landry1980Cooper2017Kamara1988Jackson2017McCaffrey2004Clayton1986Walker1993Kirby2020Lamb2002Shockey2014Benjamin2015Cooper1985Clark1960Groman2013Allen10192919191908888848381818080767574747372727271
NAMESEASONTMGPRECTRGREC YDSAVGREC YDS/GREC TDRUSH YDSATTYPCRUSH YDS/GRUSH TD
Anquan BoldinAnquan Boldin2003ARIARI161011651,37713.686.184058.02.50
Michael ThomasMichael Thomas2016NONO15921211,13712.475.89000.00
Saquon BarkleySaquon Barkley2018NYGNYG16911217217.945.141,3072615.081.711
Odell Beckham Jr.Odell Beckham Jr.2014NYGNYG12911301,30514.3108.8123575.02.90
Eddie RoyalEddie Royal2008DENDEN159112998010.865.35109119.97.30
Terry GlennTerry Glenn1996NENE15901,13212.675.564258.42.80
Justin JeffersonJustin Jefferson2020MINMIN16881251,40015.987.57212.00.10
Reggie BushReggie Bush2006NONO16881217428.446.425651553.635.36
Jarvis LandryJarvis Landry2014MIAMIA16841127589.047.45-42-2.0-0.30
Earl CooperEarl Cooper1980SFSF16835676.835.447201714.245.05
Alvin KamaraAlvin Kamara2017NONO168110082610.251.657281206.145.58
Keith JacksonKeith Jackson1988PHIPHI168186910.754.36000.00
Christian McCaffreyChristian McCaffrey2017CARCAR16801136518.140.754351173.727.22
Michael ClaytonMichael Clayton2004TBTB16801221,19314.974.673056.01.90
Herschel WalkerHerschel Walker1986DALDAL167683711.052.327371514.946.112
Terry KirbyTerry Kirby1993MIAMIA167587411.754.633901193.324.43
CeeDee LambCeeDee Lamb2020DALDAL167411193512.658.4582108.25.11
Jeremy ShockeyJeremy Shockey2002NYGNYG157412789412.159.62000.00
Kelvin BenjaminKelvin Benjamin2014CARCAR16731451,00813.863.09000.00
Amari CooperAmari Cooper2015OAKOAK16721301,07014.966.96-33-1.0-0.20
Gary ClarkGary Clark1985WASWAS167292612.957.951025.00.60
Bill GromanBill Groman1960HOUHOU14721,47320.5105.212000.00
Keenan AllenKeenan Allen2013SDSD15711041,04614.769.78000.00
Dwayne BoweDwayne Bowe2007KCKC167011899514.262.25000.00
Marques ColstonMarques Colston2006NONO14701151,03814.874.18000.00
StatMuse has season-level data for receptions going back to the 1932 season.