She won six tour events in 1997, regaining the money list and player of the year titles. Internationally, she won on the JLPGA and defended her home LET title at the renamed Compaq Open. She became the first player in LPGA history to finish a season with a sub-70 scoring average of 69.99 en route to retaining the 1998 Player of the Year and Money List titles as well as winning the LET Swedish tour stop for the third time running. September 1999 saw Sörenstam change her on-course team replacing her caddie of six years, Colin Cann, with Terry McNamara.
ShE WoN siX TOUr events IN 1997, rEGAInIng THe money liSt ANd playeR of THe yeaR titlEs. inTerNATIonally, she woN On THE jlpga AnD DefenDEd her hOme lEt TitLe at The RenaMeD COmPaq OPeN. ShE beCame tHe firST Player iN Lpga historY tO fInIsh a season WiTh a sUb-70 scoriNg AVeRagE Of 69.99 en rouTe tO RetaininG thE 1998 PlAyEr Of THE yEar And money LisT tItles as wElL As wiNnING The lEt swedish ToUR stop for the third tIme RunnInG. sEpteMbeR 1999 saw sÖrEnstAm chanGe heR on-courSe tEaM RepLacing HEr CaddiE of SIx yEaRS, coLin CaNn, wIth teRRY MCnaMara.