The best offense in the Pac-12 meets the league's best defense when No. 5 Oregon plays host to Arizona at noon Sunday.PPG: 90.3 | FG%: 52.1 | 3FG%: 40.9 | FT%: 79.0Notes: The Ducks have one of the most effecient offenses in the nation so far this season. UO's 90.3 points per game is No. 2 in the NCAA. UO is first in the nation with a 1.82 assist-to-turnover ratio. UO's 11.0 turnovers per game are the third fewest in the NCAA while its 20.0 assists per game rank fifth. Oregon is first in the nation in field goal percentage (52.1%), second in free throw percentage (79.0%) and third in three-point percentage (40.9%).PPG: 68.4 | FG%: 42.5 | 3FG%: 33.4 | FT%: 66.8Series: Oregon leads, 38-28 (22-8 in Eugene)Last: Oregon won, 74-61 (2/25/18 in Tucson)Notes: Arizona started conference play 3-1, including wins over ranked foes Arizona State and Cal. However, the Wildcats have suffered back-to-back defeats to Stanford (78-48) and Oregon State (86-64). PG Aari McDonald ranks No. 3 in the nation in scoring at 25.2 ppg. Arizona ranks No. 25 in the NCAA and No. 1 in the Pac-12 in scoring defense, allowing just 56.2 ppg.This weekend against the Arizona schools, Oregon is offering two free tickets to either game for all federal workers. Simply show an ID badge at the Matthew Knight Arena ticket window to claim a pair of general admission tickets. The offer is only available in person, not online.- Oregon has won four straight vs. Arizona and six of seven. Arizona has not won in Eugene since March 5, 2011.- UA's Aari McDonald is third in the NCAA with 25.2 ppg. She's third in free throws made (101), sixth in attempts (127).(19.8),(19.4) and(18.0) are all averaging 18+ ppg in Pac-12 play.- Ionescu is the all-time NCAA (mens/womens) leader with 15 career triple-doubles (prev: 12, Kyle Collinsworth, BYU)(3.59-to-1) and(3.26-to-1) rank No. 4 and No. 8 in the NCAA in assist-to-turnover ratio.- UO has two top-10 RPI wins this season (Syracuse, 4 and Miss State, 9), tied with Stanford for the most in the NCAA.- UO features both the national point guard of the year (Ionescu) and the national power forward of the year (Hebard).UO is fifth in the AP poll for the fourth straight week.TV - Pac-12 National, Pac-12 Oregon, Pac-12 Arizona with Cindy Brunson & Elise Woodward.Stream - Pac-12.com & Pac-12 Now app with loginRadio - Terry Jonz on the call at 590 AM (Eugene), 1640 AM (Portland) & TuneIn. Search for "Oregon IMG" in the TuneIn app or online at TuneIn.com.- Oregon holds a 38-34 edge in the series.- Oregon has won four straight vs. Arizona, six of the last seven and nine of the last 12.- UO's win in Tucson last season clinched Oregon's outright Pac-12 regular season title.is 6-2 vs. Arizona while at Oregon, including 3-0 at Matthew Knight Arena.- The Ducks were 0-3 against UA in the Pac-12 Tournament until 2017's 70-63 win in the first round.- Oregon and Arizona first met Jan. 3, 1981, with the Ducks prevailing, 94-58, in Tucson.- Oregon won the first seven times the Ducks and Wildcats met, running from 1981-1989. That seven wins is UO's longest streak in the series.- The Ducks and Wildcats combined for the highest scoring game in Pac-12 history on Jan. 16, 2010 in Tucson. Arizona won, 119-112. The 231 combined points is the most in Pac-12 history. The Ducks' 112 points are the most scored by a losing team in Pac-12 history.has two double-doubles in four career games against Arizona. She's averaging 20.3 points on 69.0% shooting with 10.3 rebounds per game against the Wildcats.is averaging 16.8 points, 6.5 rebounds and 6.0 assists per game against UA.had a huge freshman year against Arizona, posting 42 points on 15-of-27 shooting in two games.The Ducks are 5-0 in Pac-12 play thus far and have a chance to match their best start in league play. Oregon started its Pac-12 slate 6-0 last season, the program's best start to league play since joining the Pac-10 for the 1986-87 season.The Ducks have lost just two quarters in five Pac-12 games this season. Washington outscored the Ducks in the second quarter (23-15) and Arizona State outscored the Ducks in the fourth (24-20).- With after posting 10 dimes on Jan. 6 against Washington,became just the 12th player in Pac-12 history to tally 600+ career assists. She did it in 84 career games.joined Ionescu in the exclusive 600+ club in the very next game, on Dec. 11 at USC. The 13th player in Pac-12 history with 600+ assists, she's had 140+ assists each season. Cazorla reached the 600 mark in 123 career games.- Only six active players in the NCAA have reached 600+ assists: Ionescu and Cazorla are joined by Colorado's Kennedy Leonard, Ohio State's Carmen Grande, Belmont's Darby Maggard and Lamar's Chastadie Barrs.is currently averaging 19.9 points, 7.5 rebounds and 8.2 assists per game, the only player in the NCAA averaging 16+ points, 7+ rebounds and 7+ assists.- The last time anyone posted a balanced stat line even close to that was in 2014-15, when Cal's Brittany Boyd averaged 13.4 points, 7.7 rebounds and 6.8 assists.Oregon leads the Pac-12, averaging 6,356 fans per home game. UO is one of just 10 teams in the NCAA averaging 6,000+ fans per game.