Jerry Rice has the most career receiving yards by a wide receiver in Week 1, with 1,385 yards.

the most receiving yard by a receiver in week one game history
RiceReedFitzgeraldMossWayneBoldinJohnsonStallworthIrvinJonesOwensSmithBruceJacksonJohnsonHarrisonBrownWardLargentFryarGreenHoltSmith1.4k1.2k1.2k1.2k1.1k1.1k1.1k1.1k1.1k1.0k999995978959948935930928913906889856855
NAMEGPREC YDSRECTRGAVGREC YDS/GREC TDRUSH YDSATTYPCRUSH YDS/GRUSH TD
Jerry RiceJerry Rice201,385924215.169.3977107.73.92
Andre ReedAndre Reed151,22582914.981.7105769.53.80
Larry FitzgeraldLarry Fitzgerald171,2159617112.771.59-11-1.0-0.10
Randy MossRandy Moss141,1947611115.785.310616.00.40
Reggie WayneReggie Wayne131,1308113314.086.97000.00
Anquan BoldinAnquan Boldin131,0897511114.583.871728.51.30
Andre JohnsonAndre Johnson141,0828312913.077.33723.50.50
John StallworthJohn Stallworth141,0796018.077.174703.41
Michael IrvinMichael Irvin101,068641116.7106.87212.00.20
Julio JonesJulio Jones111,0307010514.793.6711111.01.00
Terrell OwensTerrell Owens159997212913.966.681234.00.80
Steve Smith Sr.Steve Smith Sr.149957312913.671.18623.00.40
Isaac BruceIsaac Bruce15978718813.865.24-81-8.0-0.50
DeSean JacksonDeSean Jackson139596010316.073.862947.32.20
Keyshawn JohnsonKeyshawn Johnson11948648114.886.25321.50.30
Marvin HarrisonMarvin Harrison139358110011.571.98-71-7.0-0.50
Antonio BrownAntonio Brown9930588616.0103.361434.71.60
Hines WardHines Ward14928729312.966.38020.00.00
Steve LargentSteve Largent149136115.065.24-11-1.0-0.10
Irving FryarIrving Fryar1590647619.360.41113113.00.90
A.J. GreenA.J. Green10889569115.988.96515.00.50
Torry HoltTorry Holt11856649513.477.83000.00
Jimmy SmithJimmy Smith10855576615.085.58000.00
Charlie JoinerCharlie Joiner168484917.353.04-32-1.5-0.20
Joey GallowayJoey Galloway15847577614.956.542546.31.70
StatMuse has game-level data for receiving yards going back to the 1960 season.