By Andrew Holleran ESPN’s longest-tenured SportsCenter reporter is officially retiring on Monday. Mark Schwarz, who was known for his ability to ask tough questions, has decided to call it a career in sports journalism. “I very much knew when I signed my last deal back in December of 2018 it would be my final deal,” said Schwarz. “And I have thoroughly enjoyed all 32 years that I’ve had. “Using a sports cliché – I’ve put it all out on the field,” he said. “I have plenty more to give, and I’m a young guy in good health, but there’s a lot more in my life that I’m looking to do right now, and I j…