O'Neill will likely remain sidelined for the next two weeks after straining his right hamstring during Friday's game, Joe Trezza of MLB.com reports.

EDGE Analysis

O'Neill hasn't officially been ruled out for the remainder of the club's Grapefruit League games but it seems highly unlikely that St. Louis will rush him back into meaningless contests with the regular season fast approaching. The 22-year-old is set to begin the 2018 campaign at Triple-A Memphis but will have a solid chance to work his way up to the majors at some point this summer.

O'Neill exited Friday's spring game against the Astros with a right hamstring strain, Derrick Goold of the St. Louis Post-Dispatch reports.

EDGE Analysis

Friday was O'Neill's first start since returning from the strained oblique he sustained in late February. The severity of the injury is unclear at this point but the 22-year-old seems likely to at least be sidelined for a couple of days.

O'Neill came into Thursday's Grapefruit League game and received an at-bat for the first time since going down with a strained oblique in late February, Joe Trezza of MLB.com reports.

EDGE Analysis

O'Neill was also able to take the field in left during Thursday's contest against the Marlins, making a diving catch in the bottom of the ninth inning to help the Redbirds claim a spring victory. Prior to this outing, O'Neill had only appeared as a pinch hitter, so this is a clear step forward for the 22-year-old. Expect him to slide into the starting lineup within the next couple days.

O'Neill (oblique) was able to enter Wednesday's Grapefruit League game against Washington as a pinch runner, Joe Trezza of MLB.com reports.

EDGE Analysis

O'Neill had been dealing with a strained oblique for the past few days, but he appears to be nearing full health and could get back onto the field in the near future. The outfield prospect slashed .253/.304/.548 with 12 home runs and 39 RBI in 37 games with Triple-A Memphis after coming over from the Mariners' organization last July.

O'Neill (oblique) is progressing but still isn't close to returning, Glenn Sattell of MLB.com reports.

EDGE Analysis

Manager Mike Matheny remarked that the fact the injury was caught early has helped O'Neill with his recovery timeline thus far, but that still doesn't project an imminent return for the promising prospect. The 22-year-old, who's slated to begin the season at Triple-A Memphis but could certainly find his way to the big-league club in 2018, was hitting .222 (2-for-9) with a walk, a stolen base and a run in four spring training games before being sidelined.

O'Neill has a strained oblique, Joe Trezza of MLB.com reports.

EDGE Analysis

O'Neill's last spring appearance came Monday against the Twins. The 22-year-old outfielder was expected to open the season at Triple-A Memphis, so this injury likely doesn't affect his eventual major-league arrival date.

O'Neill was added to the Cardinals' 40-man roster Monday.

EDGE Analysis

By being added to the 40-man roster, O'Neill will be protected from the Rule 5 draft. O'Neill opened the 2017 season in the Mariners organization before being traded to the Cardinals. Between Triple-A Tacoma and Triple-A Memphis he played in 130 games and slashed .246/.321/.499.

O'Neill went 3-for-6 with five RBI from a two-run single and three-run home run for Triple-A Memphis against Colorado Springs on Sunday.

EDGE Analysis

As per Mike Rosenbaum of MLB.com, it was O'Neill's second three-hit effort in as many games, while the homer was his fifth in the last six contests. The slugging prospect now has 31 round trippers between his time in the Mariners and Cardinals organizations this season, leaving him just one short of his career high.

O'Neill went 1-for-2 with a two-run home run in Triple-A Memphis' win over Salt Lake City on Tuesday, his first round tripper since being traded from the Mariners last Friday.

EDGE Analysis

The slugging outfielder wrapped up his Mariners career with five home runs in his last five games, so Tuesday's homer was an extension of his recent power surge. O'Neill's upside ensures he'll be monitored closely for the balance of the campaign, and it would appear highly likely he'll receive a spring training invite in 2018.

O'Neill was shipped to the Cardinals on Friday.

EDGE Analysis

As one of the top prospects in the Mariners' organization, O'Neill was used to bring over southpaw Marco Gonzales from St. Louis to bolster Seattle's pitching depth. O'Neill is certainly a great get for the Cardinals, providing another quality outfield bat to their system. During 93 games with Triple-A Tacoma this season, O'Neill slashed .244/.328/.479 with 19 home runs and 56 RBI. Although he needs to work on his strikeout rate, which is hovering just over 27 percent on the season, he had more than enough upside to appeal to the Redbirds. Over the past 25 games alone, the 22-year-old has hit .320 with a slugging percentage of .763, knocking in 13 home runs and plating 30 runners. He will be one of the Cardinals' top prospects moving forward, and figures to report to Triple-A Memphis following this trade.