By Jacob Messing

The college hockey season is down to the Frozen Four, which means the annual wave of NCAA-turned-NHL player signings has peaked.

With the plethora of movement, FloHockey has all the major signings all in one place, focused on the biggest Division I players who opted to forgo their remaining college careers.

The Los Angeles Kings were among the busiest of NHL teams, while the 2017 NCAA champion Denver University Pioneers saw four key players leave the program early, and all three Hobey Baker finalists have taken the next step.

Ryan Donato | C | Boston Bruins

Harvard University | 29 GP, 26 G, 17 A, 43 pts., plus-15

The Boston Bruins inked the 2014 second-rounder (56th overall) Donato after he finished tied for 16th in NCAA scoring, which he did in just 29 games due to his Olympic bid with Team USA. The center’s signing was one of the first notable acquisitions from college hockey.

With 26 goals in 29 games, Donato was named as one of three Hobey Baker finalists. The 21-year-old opted to forgo his senior season and sign with the Boston Bruins after such a fantastic run. He recorded five goals and six points in five Olympic games.

Through eight games with the Bruins, he has scored four goals and three assists for seven points as another young gun for the playoff-bound Bruins.

Casey Mittelstadt | C | Buffalo Sabres

University of Minnesota | 34 GP, 11 G, 19 A, 30 pts., plus-4

Mittelstadt was one of a few important departures from Minnesota this spring. Drafted eighth overall in 2017, the dynamic offensive player finished second in team scoring for the Gophers in his freshman season and was a standout at the world junior championships.

Casey Mittelstadt has the #Gophers within one after his second PPG of the game. The freshman now with his first career multi-goal game. pic.twitter.com/ukiOczuY50

— Minnesota M Hockey (@GopherHockey) March 3, 2018

As the leading scorer and MVP, the 19-year-old scored four goals and 11 points in seven games as the USA captured the bronze medal.

He’ll be a big part of the annually rebuilding Buffalo Sabres as they continue to look to break out of the NHL’s basement. In three games with the Sabres, Mittelstadt has chipped in two assists as the third-line center.

Jordan Greenway | LW | Minnesota Wild

Boston University | 36 GP, 13 G, 22 A, 35 pts., plus-9

After an impressive 2016-17 campaign, Greenway managed to top it in 2017-18. Just one point shy of the point-per-game mark, the 6-foot-6, 227-pound winger missed time while making history as he became Team USA’s first African-American player at the Olympics.

He didn’t fare too well in South Korea, with just one goal in five games, but the big-bodied power forward has grown his game in each of his three seasons with Boston University.

Drafted by Minnesota in 2015 in the second-round (50th overall), Greenway been held pointless in three games since signing with the Wild. He’ll likely get his first taste of playoff action in the coming weeks.

Adam Gaudette | C | Vancouver Canucks

Northeastern University | 38 GP, 30 G, 30 A, 60 pts., plus-12

Gaudette paced the NCAA with 30 goals and 60 points this season on his way to becoming a Hobey Baker finalist. The 21-year-old established career highs in goals, assists, and points in each of his three years with Northeastern.

A 2015 sixth-round pick (149th overall) of the Vancouver Canucks, Gaudette has established himself as a player who goes hard to the net and refuses to give up the puck. He’s an all-around forward showing he’s ready for the NHL game.

In two games with the Canucks, Gaudette has yet to hit the scoresheet, but he should have a full-time role on the young, up-and-coming team next season.

Dylan Gambrell | C | San Jose Sharks

Denver University | 41 GP, 13 G, 30 A, 43 pts., plus-16

After three seasons with the Pioneers—which included a national championship in 2017—Gambrell signed with the San Jose Sharks, forgoing his senior season.

Drafted in the second round (60th overall) Gambrell was a consistent scorer for Denver. He best year came as a freshman with 17 goals and 47 points in 41 games, but he added 13 goals in his sophomore and junior seasons, scoring 42 and 43 points, respectively.

He has yet to make his NHL debut as the rolling Sharks try to solidify the second spot in the Pacific Division, but he is likely to see action down the stretch.

Henrik Borgström | C | Florida Panthers

Denver University | 40 GP, 23 G, 29 A, 52 pts., plus-13

Shortly after the departure of Gambrell, the Florida Panthers inked one of their top prospects in Borgström away from Denver, too. He’s a smooth skater with slick hands, an accurate shot and a 6-foot-3 frame.

St. Paul, meet Henrik Borgström #DU1NATION #Petey pic.twitter.com/9TZYyA2jzU

— Denver Hockey (@DU_Hockey) March 17, 2018

The third Hobey Baker finalist, Borgström finished fourth in league scoring in his sophomore season. Drafted 23rd overall by the Panthers in 2016, the 20-year-old is another young part of a developing Panthers team.

Borgström has gotten into two games with the Panthers, who have shown a lot of trust in him as they’ve gone 13-5-2 in their past 20 games and are pushing for a wild card spot in the east.

Troy Terry | C | Anaheim Ducks

Denver University | 39 GP, 14 G, 34 A, 48 pts., plus-21

Terry made a name for himself with his shootout heroics during the 2017 World Junior Championships with Team USA; in that tournament he scored four goals and seven points in as many games.

Another member of the Pioneers, Terry will be sorely missed after forgoing his senior season. He finished eighth in NCAA scoring this season as an alternate captain for Denver. He tallied five assists in five games with Team USA at the Olympics.

A fifth-round pick (148th overall) of the Anaheim Ducks in 2015, the 20-year-old has played in one game since joining the team.

Blake Hillman | D | Chicago Blackhawks

Denver University | 41 GP, 3 G, 9 A, 12 pts., plus-6

The fourth departure of Denver, Hillman was a reliable shutdown defenseman for the Pioneers during is three seasons and even posted career-highs with three goals, nine assists, and 12 points.

While the offense from Gambrell, Borgström, and Terry will be missed, the stabilizing presence of Hillman will be just as hard to replace after leaving following his junior season. The Pioneers have now lost two key defensemen over the past two years in Hillman and New Jersey defenseman Will Butcher.

The odds were against Hillman as a sixth-round pick (173rd overall) in 2016, but the 22-year-old has already laced up for the Blackhawks.

Andrew Sturtz | RW | Ottawa Senators

Penn State University | 37 GP, 14 G, 26 A, 40 pts., plus-13

After three seasons with Penn State, free agent forward Sturtz signed with the rebuilding Ottawa Senators following a tumultuous season. His goal scoring dropped form 2016-17, but he still established a career high with 40 points.

The 5-foot-9 forward is among the smaller players of the league, but his speed and tenacity stuck out to Ottawa. He’s a reliable two-way forward that went plus-50 during his college career.

He has not suited up for the Senators yet, but with nothing but a high draft pick to look forward too, he’s bound to see action before the season ends.

Daniel Brickley | D | Los Angeles Kings

Minnesota State University | 40 GP, 10 G, 25 A, 35 pts., plus-16

A coveted free agent defenseman, Brickley visited with five teams before settling on Los Angeles. Shortly after landing him, the Kings signed Michael Eyssimont and Sheldon Rempal out of St. Cloud State and Clarkson University, respectively.

The undrafted 6-foot-3, 205-pound defenseman was sought after last spring, but ultimately returned to Minnesota State for his junior season. A two-way defender, the 23-year-old was described as a wild card by one NHL general manager for his ability to play an all-around game.

As a big fan of Kings defenseman Drew Doughty, Brickley will now have the ability to skate and learn from the annual Norris Trophy contender firsthand.

With Michigan, Ohio State, Notre Dame, and Minnesota Duluth left in the Frozen Four, more moves may be coming. Find the entire list of college signings here.

Have a question or a comment for Jacob? You can find him on Twitter @JMessing23.