TUCSON, Ariz. — Koa Peat, Jaden Bradley and Motiejus Krivas each had a double-double as No. 1 Arizona continued its string of blowout victories in a 99-71 win over South Dakota State on Monday night.The Wildcats (13-0) are off to their best start since 2013-14, when they began 21-0. It is the fourth time they’ve started a season with at least 13 consecutive victories.Peat had 19 points and a career-high 14 rebounds, Bradley had 13 points and a career-best 10 assists and Krivas went for 13 points and 11 rebounds as Arizona won by at least 20 for the eighth consecutive game, tying a school record set in 1928-29.Arizona had six players in double figures for the third time this season.Kalen Garry had 20 points and Jaden Jackson scored 18 for South Dakota State, which fell to 1-23 against ranked opponents. The Jackrabbits shot 40.6% and made 10 3-pointers, but their 14 turnovers led to 18 points for Arizona.Arizona made 14 of its first 21 shots to build a 43-25 lead with 5:58 left in the first half but then missed 13 of 16. The Wildcats made up for the inconsistent shooting from the field by going 24 …