If you ask most NFL fans who the best wide receiver of all time is, the vast majority of them will say Jerry Rice. But if you ask most NFL fans under the age of 25 who the best wide receiver of all time is, you'll probably get quite a few of them who will respond with former Detroit Lions wideout Calvin Johnson, who was so physically dominant that they dubbed him "Megatron".
Johnson retired, like another former Lion great in Barry Sanders, before his prime ended, and while his career didn't span even a full decade, he more than made his presence felt.