Kade Anderson: MiLB, LSU, High School, Contract and Scouting Report

Kade Anderson has rapidly developed from an LSU standout into one of baseball’s most highly regarded pitching prospects. The left-hander was selected No. 3 overall by the Seattle Mariners in the 2025 MLB Draft after leading LSU to a national championship.

His first full professional season has been even more impressive. Anderson dominated Double-A hitters with the Arkansas Travelers in 2026, earning a promotion to Seattle for his Major League debut against the Chicago Cubs on Saturday, August 22.

MLB Pipeline currently ranks Anderson as the No. 5 overall prospect in baseball and No. 1 prospect in the Mariners organization.

Kade Anderson MiLB career

Anderson entered professional baseball after Seattle selected him third overall in the 2025 MLB Draft.

The Mariners initially planned to take a cautious approach because of his heavy workload at LSU. He did not pitch professionally after signing in 2025, instead preparing for his first full season in the organization.

That patience has paid off.

Anderson opened 2026 with the Arkansas Travelers, Seattle’s Double-A affiliate. Through 18 starts, he has produced a remarkable 10-1 record, 1.06 ERA, 93.1 innings, 135 strikeouts and only 13 walks. His WHIP is 0.64, while opposing hitters have managed only a .147 batting average.

The numbers demonstrate just how dominant his first professional season has been.

He has also shown outstanding control. Baseball America reports that Anderson has thrown strikes 69% of the time and that opponents have struggled to reach base against him.

Kade Anderson MLB promotion

The Mariners announced plans to promote Anderson for his Major League debut on August 22 against the Chicago Cubs.

That promotion comes after one of the most dominant minor-league seasons by a pitching prospect in recent memory. Anderson has been particularly effective at preventing hard contact while generating strikeouts.

Seattle intends to use him as a starting pitcher, rather than moving him into the bullpen.

His promotion is significant because Anderson has moved extremely quickly through the organization. He went from the third overall pick in 2025 to dominating Double-A one year later.

Kade Anderson LSU career

Before joining the Mariners, Anderson became a star at Louisiana State University.

His LSU career took a dramatic turn between his freshman and sophomore seasons. In 2024, he was eased back into competition after recovering from Tommy John surgery. He appeared in 18 games, including nine starts, and finished with a 4-2 record, 3.99 ERA and 59 strikeouts over 38.1 innings.

The following season was completely different.

Anderson became LSU’s ace and one of the best pitchers in college baseball. He went 12-1 with a 3.18 ERA and 180 strikeouts in 119 innings, leading Division I baseball in strikeouts.

His performance helped LSU win the 2025 College World Series.

Anderson was particularly dominant in Omaha. He went 2-0 during the College World Series and posted a 0.56 ERA across 16 innings, allowing only one run while striking out 17. He also threw a shutout against Coastal Carolina in the championship series.

For his performance, Anderson was named the Most Outstanding Player of the College World Series.

He also earned Baseball America’s College Pitcher of the Year award.

Kade Anderson high school

Anderson attended St. Paul’s School in Covington, Louisiana, where he developed into a highly regarded left-handed pitching prospect.

His high school career, however, was interrupted by an elbow injury.

Anderson underwent Tommy John surgery in 2022 and missed his senior season. Instead of pitching during his final high school campaign, he was limited to other baseball activities.

The injury created uncertainty around his long-term pitching future, but Anderson successfully rebuilt his arm and eventually became one of the most dominant pitchers in college baseball.

His recovery is an important part of his development story because he went from missing his senior high school season to becoming a top-three MLB Draft selection only a few years later.

Kade Anderson contract

The Seattle Mariners signed Anderson after selecting him No. 3 overall in the 2025 MLB Draft.

His signing bonus was $8.8 million, according to MLB draft reporting. The deal came in below the approximately $9.5 million slot value associated with the No. 3 selection.

The contract reflected both Anderson’s tremendous upside and the Mariners’ confidence in his development.

Seattle had selected him after he finished his LSU career as a national champion and one of the most accomplished pitchers available in the draft.

Kade Anderson scouting report

Anderson’s scouting profile is built around a deep four-pitch mix, command and deception.

MLB Pipeline currently gives him an overall scouting grade of 60 on the 20-80 scale. His individual grades are:

• Fastball: 60
• Curveball: 55
• Slider: 55
• Changeup: 60
• Control: 55
• Overall: 60

Fastball

Anderson’s fastball does not rely solely on velocity.

The pitch generally sits around 92-94 mph and can reach 97 mph, but its carry through the upper part of the strike zone makes it play above its radar-gun readings.

That ability to generate swings and misses without elite velocity is one of the most interesting parts of his profile.

Slider

Anderson developed a high-spin slider that became a major weapon during his breakout LSU season.

The pitch typically operates in the mid-80s and gives him another option against hitters from both sides of the plate.

Changeup

His changeup is another important weapon.

MLB Pipeline grades it as a 60, matching his fastball grade. The pitch features fade and sink and became more prominent as Anderson’s college career progressed.

Command

Command may ultimately determine just how high Anderson’s ceiling becomes.

He has an athletic delivery, a quick arm and the ability to repeat his mechanics. His 2026 minor-league numbers provide strong evidence of that control, with only 13 walks in 93.1 innings.

Kade Anderson strengths and weaknesses

Anderson’s biggest strengths include his pitchability, command, changeup, fastball movement and ability to keep hitters off balance.

His experience recovering from Tommy John surgery remains part of his medical history and represents a consideration for Seattle as it manages his workload.

His relatively slender 6-foot-2, 179-pound frame also leaves room for additional physical development. MLB Pipeline believes there is potential for more stuff as he matures physically.

The Mariners therefore have a pitcher who already possesses a high floor while retaining the potential to become a frontline starter.

Kade Anderson prospect ranking

Anderson’s rapid rise has made him one of the most valuable prospects in baseball.

MLB Pipeline lists him as the No. 5 overall prospect and Seattle’s No. 1 prospect.

His 2026 Double-A performance has strengthened that reputation. A 1.06 ERA, 135 strikeouts and only 13 walks over 93.1 innings is the type of production that can quickly accelerate a prospect’s development timeline.

Now, the next challenge is Major League baseball.

What makes Kade Anderson special?

Anderson’s story stands out because his development was not completely linear.

He missed his high school senior season because of Tommy John surgery. Then he returned to LSU and initially worked in a limited role before making a huge jump as a sophomore.

That breakout season produced a national championship, College World Series Most Outstanding Player award and top-three MLB Draft selection.

Then came an extraordinary first professional season.

Rather than struggling with the transition to professional hitters, Anderson dominated Double-A and forced Seattle to bring him to the majors sooner than many expected.

Kade Anderson FAQs

How old is Kade Anderson?

Kade Anderson was born July 6, 2004, making him 22 years old as of August 2026.

What team drafted Kade Anderson?

The Seattle Mariners selected Anderson with the No. 3 overall pick in the 2025 MLB Draft.

What is Kade Anderson’s contract?

Anderson signed with Seattle for an $8.8 million signing bonus after being selected third overall.

What high school did Kade Anderson attend?

Anderson attended St. Paul’s School in Covington, Louisiana.

Did Kade Anderson play at LSU?

Yes. Anderson played for LSU and became the Tigers’ ace during their 2025 national championship season.

What were Kade Anderson’s 2026 MiLB stats?

Before his Major League promotion, Anderson had a 10-1 record, 1.06 ERA, 93.1 innings, 135 strikeouts and 13 walks in 18 Double-A starts for Arkansas.

What is Kade Anderson’s scouting report?

Anderson is a left-handed starter with a four-pitch mix featuring a 92-94 mph fastball, slider, curveball and changeup. His command, pitchability and changeup are major strengths, while his frame provides room for additional physical development. MLB Pipeline gives him a 60 overall grade.

Final thoughts

Kade Anderson has followed an unusual but impressive path to the Major Leagues. After Tommy John surgery disrupted his high school career, he rebuilt himself at LSU and transformed into a national champion and College World Series Most Outstanding Player.

The Mariners then invested $8.8 million in him as the third pick of the 2025 MLB Draft.

His first professional season has justified that investment. Anderson dominated Double-A hitters and earned a Major League promotion after posting a 1.06 ERA and 135 strikeouts in 93.1 innings.

Now, the former LSU ace is ready for the biggest test of his career. His Major League debut could be the beginning of a long-term role at the front of Seattle’s rotation.