Here are the descriptions from the farm's website:
27. SERRANO
– very hot chile called for in many recipes. Candle-flame shaped fruits are 2 1⁄4”
long, green then red at full maturity. Suitable for salsas and sauce recipes as well as eating
fresh. Vigorous bearer. 10,000
– 22,000 Scoville units
30. SPORT
– 75 days. Use as a pickled pepper on hot dogs and other sandwiches. Peppers are
1.5 x .5”. Medium-hot and an essential condiment in a Chicago-style hot dog.
And an excerpt from a book about hot peppers (grabbed from Barry Popik's great site)
Hot Peppers:
The Story of Cajuns and Capsicum By Richard Schweid
Edition: 2, revised, illustrated
Chapel Hill, NC: UNC Press
1999
Pg. 24:
“Then my daddy took to growin’ sport peppers. Sports are not as large as cayennes, and not so small as tabascos. They’re an in-between size. They were called sports because they didn’t burn your hand when you picked them. Also, a sport pepper looks like somebody dressed up in a nice, new suit. That’s just how it looks.”