It’s not easy sleeping on a lead. Especially when that Sunday tee time creeps well past lunchtime. For the first time since 1998, the winners of every LPGA major in a season held the 54-hole lead. The four majors in 1998 were won by Pat Hurst, Brandie Burton and Se Ri Pak (twice). This year’s group hailed from five different countries, and two were first-timers. Minjee Lee enjoyed the most consistent year in the majors, which earned her the Rolex Annika Major Award. She posted four top-12 finishes in the five majors, with her worst showing, T-43, coming at the…