Mets’ outfielder Cowgill being compared with gritty Dykstra

PORT ST. LUCIE — Collin Cowgill is fully aware of the history involved with the No. 4 jersey the Mets have issued him this spring. The Mets say it’s just a coincidence the 26-year-old outfielder received Lenny Dykstra’s old number, but for years Cowgill has heard he plays the…