On Feb. 19, on a very comfortable 70-degree night in Ocala, Fla., righthander Keyvius Sampson took the mound for Forest High's first game of the season. About 930 miles north, another one of Baseball America's top 100 high school prospects, Neuqua Valley High lefthander Ian Krol, was preparing for his high school season indoors. The high temperature in Krol's hometown of Naperville, Ill., that day? A bitter 24 degrees and windy. Such is life for amateur pitchers in cold climates.