Lockwood attended Catholic Memorial High School in West Roxbury, Massachusetts, where he earned 14 varsity letters in four years. His school record time in the 100-yard dash in still stands. Lockwood was a third baseman when he signed with the Kansas City Athletics out of high school in 1964 as an amateur free agent. The scout representing the Athletics came to the Lockwood home with a $35,000 contract. Lockwood said that he needed to make one change before signing, and brashly added a "1" in front of the contract amount, changing the number to $135,000. The scout was understandably nervous, and asked to use the Lockwood's phone to call Athletics' owner Charlie Finley. Finley spoke to Lockwood directly, asking why he should give Lockwood the money. "Because I'll make you a winner", said Lockwood. The scout went back on the phone, and Finley approved the higher amount. Despite batting only.208 with the Burlington Bees, he showed decent power with five home runs in 236 at bats, and was brought up to the majors for the season. With the A's, he batted only.121 with eleven strikeouts in 33 at bats, and was back in the minor leagues the next two seasons. Lockwood could hit the fastball, but never could do much with the breaking stuff.
Pitcher
On November 28,, Lockwood was drafted by the Houston Astros in the 1967Rule 5 draft, but, following spring training, he was returned to his original club, which had moved to Oakland. Upon his return to the Athletics organization, Lockwood was converted to a pitcher despite having only pitched one inning with the Modesto Reds in. On October 15,, he was selected by the Seattle Pilots in the 1968 expansion draft. During their first and only season, he made his major league debut on the mound with the Pilots, going 0–1 with a 3.52 earned run average in six games. Lockwood spent the next four years with the franchise following their move to Milwaukee, and spent most of his time with the Brewers as a starting pitcher. In his final season in Milwaukee, 1973, he made 22 of his 37 appearances out of the bullpen. Up to that point, he'd only made seven appearances in relief.
Relief pitcher
Following an off season trade, Lockwood was used almost exclusively as a reliever by the California Angels. With the Angels, he earned his first save. In 1975, Lockwood joined the New York Mets, with whom he blossomed as a reliever. In and, Lockwood earned 19 and 20 saves, respectively, and established a Mets season record for games pitched in 1977 with 63. According to the Mets blog, Amazin' Avenue, Lockwood was in 2007 the forty-second best player in Mets history. Unfortunately Lockwood played for the Mets during one of the darker times in franchise history. He signed with the Boston Red Sox for the 1980 season, going 3–1 and making one start. The following Spring, he was released by the Red Sox, and retired shortly afterwards. In twelve seasons, Lockwood's career stats are:
W
L
PCT
ERA
G
GS
GF
CG
SHO
SV
IP
H
ER
R
HR
BB
IBB
K
WP
HBP
Bk
BF
Fld%
Avg
57
97
.370
3.55
420
106
219
16
5
68
1236
1130
488
539
98
490
62
829
43
33
5
5215
.951
.154
Outside baseball
Lockwood has two master's degrees, one from Fairfield, and the other from MIT. He graduated from the Massachusetts Institute of Technology with a S.M. in. He is one of the few MIT graduates who have played Major League Baseball. Lockwood was also an accomplished candlepin bowler. In 2018, Lockwood released a memoir entitled Insight Pitch, which he wrote without using a ghostwriter.