By NCAA rule, college coaches can’t initiate phone conversations with high school recruits until June 15 following their sophomore year. This means that last Saturday marked the first day during which men’s basketball coaches could make phone calls to members of the class of 2021.

Ohio State has a four-man class of 2019 already on campus, giving it a full roster for the 2019-20 season. Just one roster spot is open at the moment for the class of 2020, which does not yet have any commitments, and it’s far too early to tell how many scholarships will be available for the class of 2021. That class does have one member: Convoy (Ohio) Crestview power forward Kalen Etzler, a four-star recruit and the No. 2 prospect from Ohio in the class according to the 247Sports.com composite rankings.

Since the calendar flipped to the 15th, the Buckeyes have offered scholarships to four members of the class of 2021. Those come on the heels of an offer extended to a rising Ohioan while at Ohio State’s team camp June 7 as well as a new offer to a prospect in the 2020 class.

Here’s a look at the new half-dozen players with offers from the Buckeyes, listed in alphabetical order.

Devin Askew, class of 2021

One of the top prospects in his class, the 6-3, 195-pound combo guard from Santa Ana (California) Mater Dei is the No. 15 recruit in the nation according to the 247Sports.com composite rankings. A five-star recruit, Askew is the top prospect from California and since the 15th has added offers from Kansas, Villanova, Nebraska, TCU and Vanderbilt in addition to Ohio State.

He recently took part in the 2019 NBPA Top 100 camp and was named an all-star.

Randy Brady, class of 2021

A four-star shooting guard from Brentwood (Tennessee) Academy, the 6-5, 190-pound Brady landed an offer on the 15th.

Blessed to have just received an offer from The Ohio State University!@OhioStAthletics #gobucks#buckeyes pic.twitter.com/RJbLgXlM94

— Randy Brady (@ShowTime34_) June 15, 2019

Brady is the No. 39 overall recruit in the 247Sports composite rankings, the No. 3 recruit from Tennessee and the No. 7 shooting guard in the nation. Tennessee, Florida State, Vanderbilt and LSU have also offered.

Kennedy Chandler, class of 2021

The Buckeyes offered a pair of Tennessee guards on the 15th. A four-star recruit in the 247Sports rankings, the 6-1, 160-pound point guard from Memphis Briarcrest Christian also holds offers from Nebraska, LSU, Alabama, Florida State and others.

Blessed to receive an offer from Ohio State University  pic.twitter.com/mBKLMNyeoj

— Chef (@KChandler_1) June 15, 2019

He is the No. 22 recruit in the 247Sports rankings, the No. 2 point guard in the nation and top prospect from his state.

Logan Duncomb, class of 2021

A Cincinnati Moeller junior, Duncomb was part of Ohio State’s team camp in early June and was watched by the entire coaching staff during an early-morning session inside the practice gym at Value City Arena. Later that day, he landed a scholarship offer from the Buckeyes.

Blessed to receive an offer from THE Ohio State University! @ChrisHoltmann @ryanpedon @OhioStateHoops #GoBucks pic.twitter.com/BVpmdxQyHH

— Logan Duncomb (@LoganDuncomb) June 7, 2019

Unranked in the 247Sports database, Duncomb is a 6-9, 225-pound center/power forward. He’s also added offers from Iowa, Xavier, Butler and Ohio.

As a sophomore, Duncomb averaged 7.7 points and 4.1 rebounds as Moeller won a state title.

Chet Holmgren, class of 2021

A 7-foot center from Minneapolis (Minnesota) Minnehaha Academy, Holmgren is the No. 31 recruit in his class according to the 247Sports composite. He’s a four-star prospect.

Holmgren tweeted about his offer Monday night, and Tuesday morning Etzler quoted it and added a few emojis.

 https://t.co/Wg2luTMSOD

— Kalen Etzler (@kalen_etzler24) June 18, 2019

In its own rankings, 247Sports ranks him as a five-star recruit and the No. 13 prospect in the country. He also holds offers from Iowa, Minnesota, Purdue, Texas and others.

Ryan Kalkbrenner, class of 2020

Approaching his senior season at St. Louis (Missouri) Trinity Catholic, the 6-11, 210-pound center is listed as a four-star prospect in the 247Sports composite rankings and the No. 74 recruit in the nation.

Illinois, Xavier, Cincinnati and others have also offered.

Zed Key, class of 2020

Another rising prospect who is adding offers, the 6-8, 215-pound power forward from Glen Head (New York) Long Island Lutheran is a three-star recruit in the 247Sports composite rankings.

Blessed and Honored to have received an offer from Ohio State #blessed #honored #motivation #hardwork #hardworkpaysoff #basketball pic.twitter.com/0aezduYZBy

— Zed Key (@ZedBasketball14) June 19, 2019

Like Askew, he was at the NBPA Top 100 camp. Illinois and Penn State had already offered, but since the camp he’s added offers from Boston College, Pitt, TCU and South Florida. He is the No. 291 overall recruit in the composite rankings, the No. 8 recruit from New York and the No. 47 small forward prospect in the country.

Lance Ware, class of 2020

A four-star recruit from Burlington (New Jersey) Camden, the 6-9, 215-pound Ware is the top recruit from his state and the No. 43 prospect in the nation.

Georgia Tech has also recently offered. He is the top prospect from his state and the No. 8 power forward in the nation according to the 247Sports composite.

ajardy@dispatch.com

@AdamJardy