 That was the exact scenario that played out, as Emerson gained a lead as great as 22 seconds (nearly a full lap) after teammates Unser and Tracy pitted at Lap 152.By Lap 195 Emerson's lead had gradually shrunk by several seconds as he finally came into the pits.He was in his pit box for only 5.9 seconds, but Unser led another Penske 1-2-3 sweep ahead of Tracy and Fittipaldi.