Grit and grind (your teeth)Marc Stein, ESPN Senior WriterApr 14, 2014, 09:39 AM ETClose• Senior NBA writer for ESPN.com • Began covering the NBA in 1993-94 • Also covered soccer, tennis and the OlympicsFollow on XEmailPrintWith the final few nervous days of the regular season looming, we take the pulse of Memphis star forward Zach Randolph.