Brandon Young, the Orioles’ No. 19 prospect according to MLB Pipeline, makes his major league debut this afternoon against the Reds. He’s wearing No. 63.

Young’s 8.50 strikeout-to-walk ratio with Norfolk ranked third in Triple-A among pitchers with a minimum 15 innings.

The Orioles designated reliever Scott Blewett for assignment. Blewett, who’s out of options, allowed an unearned run and five hits in 4 1/3 innings, with one walk and six strikeouts.

Jordan Westburg, who’s in an 0-for-27 slump, is the designated hitter today.

Cedric Mullins is leading off, followed by Gunnar Henderson and Adley Rutschman. Jackson Holliday is playing second base and Heston Kjerstad is in left field.

Gunnar Henderson batted cleanup last night, relinquishing the leadoff spot to Jordan Westburg in a right-handed heavy order. Cedric Mullins stayed in center field, but Jorge Mateo played second base instead of Jackson Holliday. Ramón Urías, batting .343 with a .410 on-base percentage, sat on the bench.

A decision also was made to withhold Heston Kjerstad against Guardians left-hander Logan Allen and put right-handed hitting Ramón Laureano in left field.

The Orioles played their 16^th game and used a 15^th different lineup. They could blow past the 144 last season.

The evolution of settling on a lineup has carried the process well beyond a manager sitting in his office with the card, a pencil and a hunch. Analytics are a major factor, of course. Where haven’t they infiltrated the sport? And it’s become more of a group effort.

“I am not involved with lineups,” executive vice president/general manager Mike Elias said yesterday.

The Orioles optioned reliever Colin Selby to Triple-A Norfolk today and activated pitcher Scott Blewett, who was claimed on waivers yesterday from the Twins.

Selby allowed two runs and three hits in his only inning in Arizona after the Orioles recalled him Wednesday as the roster replacement for Zach Eflin, who’s on the injured list with a right lat strain.

Blewett, who turned 29 five days ago, was designated for assignment again on Saturday after the Twins selected his contract earlier in the week and he allowed one run with five strikeouts and no walks in 4 2/3 innings. He’s made 19 relief appearances in the majors and posted a 2.18 ERA in 33 innings.

Blewett is wearing No. 67.

The Orioles signed catcher Chadwick Tromp to a minor league deal on Sunday. They faced him a few times in spring training with the Braves.

The Orioles apparently are making an adjustment to their pitching staff.

Scott Blewett was claimed on waivers today from the Twins and is expected to report to the club this week, perhaps by Tuesday night’s series opener against the Guardians at Camden Yards.

Left-hander Luis González, a surprise addition to the 40-man roster in November, was designated for assignment to clear room for Blewett.

Blewett has made 19 relief appearances in the majors from 2020-25, with no appearances in 2022-23, and posted a 2.18 ERA in 33 innings. He debuted with the Royals and signed twice with Minnesota as a free agent last year after they outrighted him off the 40-man roster. He’s out of minor league options, so today’s move would impact the Orioles’ roster unless they attempt to sneak him through waivers.

A corresponding move otherwise is pending.