MLB Draft Combine

MLB Draft Combine
Name	MLB Draft Combine
Established	2007
Location	Phoenix, Arizona; Surprise, Arizona
Organizer	Major League Baseball
Purpose	Prospective amateur baseball player evaluation
Frequency	Annual

MLB Draft Combine is an annual scouting event conducted by Major League Baseball to evaluate amateur players eligible for the Major League Baseball draft. The Combine assembles prospects, scouts, executives, and medical staff for a concentrated period of physical testing, on-field workouts, and medical examinations. Participants include high school prospects, college players, and international signees who seek to improve their draft position for the MLB Draft.

History

The Combine was inaugurated in 2007 as part of a broader move by Major League Baseball to centralize pre-draft evaluation alongside initiatives such as the Baseball America scouting industry expansion and the MLB Scouting Bureau reforms. Early Combine iterations occurred in Phoenix, Arizona and later shifted to venues including Surprise, Arizona to take advantage of spring training facilities used by franchises such as the Kansas City Royals, Texas Rangers, and San Diego Padres. The event was paused during the COVID-19 pandemic when the 2020 amateur draft and scouting calendar were disrupted, and resumed with modified protocols influenced by collective bargaining negotiations involving the Major League Baseball Players Association and club executives.

Over time the Combine adapted elements from combines in other sports like the NFL Scouting Combine and the NBA Draft Combine, incorporating medical imaging and analytical metrics aligned with franchises such as the Boston Red Sox, Los Angeles Dodgers, and New York Yankees that invest heavily in player evaluation. Key administrative changes were influenced by labor agreements with the MLBPA andrology of the MLB Collective Bargaining Agreement.

Format and Events

The Combine spans multiple days and mixes team workouts, interviews, and medical exams with standardized testing protocols established by the MLB Scouting Bureau. Typical elements include position-specific drills conducted at facility complexes used by clubs such as the Cleveland Guardians and Chicago Cubs, and bullpen sessions for pitchers that mirror routines used by Oakland Athletics and Atlanta Braves. Prospects partake in defensive evaluations at positions from catcher to shortstop, and offensive sessions that replicate batting practice and simulated games evaluated by scouting directors from franchises like the St. Louis Cardinals and San Francisco Giants.

Media access is controlled as with events featuring the Baseball Writers' Association of America and team media relations staffs from clubs such as the Toronto Blue Jays and Philadelphia Phillies. The schedule integrates medical imaging sessions—MRI and ultrasound—mirroring standards used by the medical teams of the New York Mets and Washington Nationals, as well as structured interviews that inform front office decisions at organizations like the Tampa Bay Rays and Milwaukee Brewers.

Eligibility and Invitation Process

Prospects are typically invited based on recommendations from the MLB Scouting Bureau, independent outlets such as Baseball America and Perfect Game, and input from team scouting departments at franchises including the Chicago White Sox and Houston Astros. Eligibility aligns with rules for the MLB draft including U.S., Canadian, and Puerto Rican high school graduates, NCAA and NAIA college athletes from institutions such as University of Southern California and Vanderbilt University, and select international signees who have entered the U.S. development pipeline.

Invitations consider performance metrics from summer leagues like the Cape Cod Baseball League, collegiate conferences such as the Southeastern Conference, and high school tournaments covered by scouting services affiliated with outlets like Rivals.com and Prep Baseball Report. Clubs may request additional medical or workout access for prospects they are considering drafting early, paralleling practices by teams like the Baltimore Orioles and Detroit Tigers.

Measurements, Testing, and Metrics

The Combine measures anthropometrics—height and weight—using protocols similar to those employed by the NFL Scouting Combine and instruments used in sports medicine centers affiliated with the Mayo Clinic. Athletic testing includes 60-yard dash times benchmarked against historic performances by notable athletes from programs like University of Arkansas and Louisiana State University, vertical jump and agility drills comparable to assessments used by the United States Olympic Committee, and throwing velocity tracked via radar guns favored by teams such as the Texas Rangers.

Hitters undergo bat exit velocity analysis with technology providers used by franchises like the Los Angeles Angels, and pitch-tracking for pitchers uses systems similar to TrackMan and Statcast installations at stadiums such as Oracle Park and T-Mobile Park. Medical evaluations include MRI, stress radiography, and biomechanical analysis overseen by club physicians from organizations like the Cincinnati Reds and Pittsburgh Pirates. Advanced metrics derived from the Combine feed into databases run by analytics groups associated with the Society for American Baseball Research and front offices employing analytics directors like those at the Oakland A's.

Scouting and Team Evaluation

Scouts and front office personnel from all 30 clubs, including the Los Angeles Dodgers, New York Yankees, and Chicago Cubs, use the Combine to validate in-season scouting reports and to compare prospects across standardized tests. Performance at the Combine can corroborate data from video scouting services such as MLB Pipeline and Statcast, and can influence decisions made by general managers including names like former executives at the San Diego Padres and Colorado Rockies.

Interviews and psychological evaluations contribute to teams' assessments alongside medical clearance performed by physicians affiliated with institutions like the Cleveland Clinic. Clubs integrate Combine findings into draft boards used by organizations such as the Minnesota Twins and Kansas City Royals to prioritize signability, bonus pool considerations driven by the Collective Bargaining Agreement, and long-term developmental projection models.

Notable Participants and Outcomes

Several prospects have used the Combine to raise their profiles before being selected by teams such as the Los Angeles Dodgers and San Francisco Giants. Alumni include players who attended collegiate programs like Vanderbilt Commodores and University of Florida Gators and later reached the Major League Baseball postseason with clubs like the Houston Astros. The Combine has featured high school standouts who were subsequently drafted in the first round by teams like the Seattle Mariners and Baltimore Orioles as well as college pitchers scouted by the Boston Red Sox and New York Mets.

Notable medical discoveries at the Combine have led to revised draft plans by organizations including the Tampa Bay Rays and Arizona Diamondbacks, while some performances—such as elite exit velocities or pitch velocities—have been highlighted in coverage by ESPN and The Athletic.

Impact on Draft and Player Development

The Combine provides centralized data that influences draft slotting, contract negotiation strategies under the MLB Collective Bargaining Agreement, and developmental plans executed by player development departments at teams like the San Diego Padres and Cleveland Guardians. Metrics from the Combine feed into minor league assignment decisions at affiliates such as those in the Triple-A and Double-A circuits, and inform training interventions coordinated with strength and conditioning staffs tied to clubs like the Washington Nationals and Milwaukee Brewers.

By standardizing testing and medical evaluation, the Combine reduces informational asymmetry among franchises and can alter a prospect's trajectory, affecting selections in the MLB draft and subsequent service-time considerations in dealings with entities like the Major League Baseball Players Association.

Category:Baseball scouting