Godau and Sanzone, Montville High School's two top players and friends since fifth grade, have such a deep bond that formalities were swept aside long ago.
"We know the garage codes for each other's houses," Sanzone said.
The duo, although seemingly laid-back, are fierce competitors and were key when the Mustangs posted a 16-2 record and garnered the North Jersey Section 1, Group III title for the first time in two decades. Montville also was runner-up to Mendham in the Morris County Tournament.
Now juniors, Godau and Sanzone want more.
"We definitely want to do it again," said Godau of Montville's state tournament run which ended with a loss to Millburn in the group final.
Godau and Sanzone will, no doubt, have prominent roles as the Mustangs try to repeat and exceed.
A week before the start of the season, Godau and Sanzone battled it out for the first singles position. Godau, the MCT third singles champion as a freshman and the MCT second singles titlist as a sophomore, ousted her close friend from the top spot. As expected, there were no hard feelings.
"We're fine," Godau said. "It's always close when we play. It's never a total blowout."
Two days after their first singles showdown, Godau and Sanzone clashed for the girls 18s title at the Lake Valhalla Club, the place where they met. Sanzone captured the championship in 2011.
Not only do Godau and Sanzone manage to keep everything in perspective, they offer guidance as tri-captains along with senior Samantha Metz, a second doubles player.
"They're all very mature for their ages," Montville coach Ken Sachs said. "They're mature well beyond their years. They were born leaders. Kirstin and Kaitlin go at it then go right back to being friends."
Both girls are solid baseline players. Godau takes pride in her net game. Sanzone is owner of an exceptional forehand.
Godau and Sanzone participate in track. Godau runs the middle to long-distance races while Sanzone is a miler. In school, Godau favors math and social studies and Sanzone likes science.
In the course of a day, members of the two families run into one another. Sanzone said it would be weird if she didn't see Godau or someone from her family every day. When addressing each others' parents, they call them "Mom" and "Dad."
This fall, Godau and Sanzone's ninth grade sisters will be on the Montville, which has much depth. Erin Sanzone will be the third singles player. Paige Godau does not have a set spot but should see action.
"Erin and Paige are talented, just like their sisters, and made varsity as freshmen," Sachs said. "They're friends, too."
Sophomore Jillian Garfunkel and junior Joanna Fass form the Mustangs' first doubles team. Alyson Resnikoff, a junior, and Metz will play second doubles. A third freshman, Liz Kogan, rounds out the varsity roster.
"We've got a really good group," Sachs said. "Our depth and experience will definitely help us. We've got doubles players who would play singles for other teams. I'm pretty optimistic."
MORE TEAMS TO WATCH
Mendham (10-2) will be without its outstanding No. 1, Casey Marx, who opted not to play, but should remain among the elite in Morris County and the state with an exceptional freshman, Lauren Hassell, in that spot.
Much of the lineup remains intact for the defending MCT champion Minutemen as Katie Gutknecht and Tara Buchney return to play singles. Mendham also has some experience at doubles with seniors Michelle Miller and Veronika Fojtu.
Chatham went 18-7 and has several key players back, including Emily Sroczynski, Jess Sullivan and Kendal Contri. Look for the Cougars to equal or improve on last year's success.
Also expected to make runs at titles are Mountain Lakes (13-4) and Villa Walsh (9-8). The Vikings missed Jamie Campisi, out with an injury last season. She'll be back at her familiar first singles spot and looking to make the most of her senior year.